Arrow

Season 1

1. Pilot

Billionaire playboy Oliver Queen, missing and presumed dead after a shipwreck that claimed the life of his father, Robert, is discovered alive after five years on a remote Pacific island. He is welcomed home to Starling City by his mother Moira, stepfather Walter Steele, younger sister Thea, and best friend Tommy Merlyn, but they sense he has changed. Moira assigns John Diggle as Oliver's bodyguard. Oliver hides the truth about the man he has become and tries to reconcile with his former girlfriend, Laurel Lance, on whom he cheated with her sister Sara, another victim of the shipwreck. While reconnecting with those closest to him, Oliver secretly masquerades as a hooded vigilante archer by night, attempting to fulfill his father's dying request: to right the wrongs of his family. Oliver's first goal is to take down corrupt millionaire Adam Hunt, who has scammed millions from various people in the city. Laurel's father, police detective Quentin Lance, becomes determined to arrest the vigilante and works with Adam to stop him. In the end, Adam's security guard, Constantine Drakon, and many other henchmen are killed. Meanwhile, it is revealed Oliver's mother has an agenda at odds with her son's, having orchestrated a kidnapping to determine what Robert told him after the shipwreck.

2. Honor Thy Father

Not to be confused with the season 5 episode " Honor Thy Fathers ". Laurel brings a civil suit against millionaire Martin Somers, who is also one of Oliver's targets, for taking part in drug trades with the Chinese Triad that ultimately led to the death of a young woman's father. As the vigilante, Oliver threatens Somers to make him confess to the murder as penance for all of the wrongs he has done to the city. Instead, Somers contacts the Triad, who send the assassin Chien Na Wei to kill Laurel. Oliver saves Laurel from Chien; he later obtains Somers' confession and gives an audio recording of it to Quentin. Meanwhile, Moira and Walter push Oliver to take a position at the company. Oliver stymies their efforts by using the opening of the company's new applied sciences division to publicly opt out of the position, knowing that he cannot simultaneously honor Robert's request to fight for the city and be the man Moira wants him to be. She is revealed to be conspiring with a man affiliated with the symbol in the book Robert gave Oliver. A flashback to Oliver's time on the island shows him being attacked by an unknown hooded figure wielding a bow and arrow.

3. Lone Gunmen

Oliver tracks down another millionaire from his list right before the latter is killed by an assassin known as Floyd Lawton. Oliver decides to build a new dance club above his hideout as a cover for his nighttime disappearances. While assessing the competition, he finds Thea, who tells him that Laurel and Tommy were involved during Oliver's absence. Laurel becomes suspicious when Oliver does not react to it and concludes he already knew. She and Tommy start dating again. Meanwhile, Oliver enlists the help of IT technician Felicity Smoak in order to learn that the venue for Floyd Lawton's next assignment is an auction which will be attended by many influential businessmen, including Walter. As the vigilante, he enlists the help of Quentin to foil Lawton's plan. Oliver succeeds, apparently killing Lawton in the process, but Diggle is shot during the fight. In order to save Diggle's life, Oliver is forced to reveal his dual identity to him. Flashbacks show that the Asian archer who attacked Oliver was actually trying to help him; Oliver misunderstands and "escapes" from the archer while being pursued by an unknown group of armed men.

4. An Innocent Man

Oliver offers Diggle the chance to fight at his side and help the city, which the latter refuses. Later, Oliver discovers a connection between Peter Declan, a death row inmate, and Jason Brodeur, one of the men on his list. As the vigilante, he enlists the help of Laurel to prove Declan's innocence. Working together, the pair uncovers the truth, but Brodeur has his mercenaries stage a prison riot so that they can have Laurel and Declan murdered before it is revealed. Oliver sneaks into the prison dressed as a guard and saves the two, with her realizing that the vigilante is merciless. Declan is exonerated while Brodeur is arrested. Diggle meets with Oliver and agrees to work with him so that he can both protect the city and protect Oliver from losing his humanity. Quentin arrests Oliver on suspicion of being the vigilante. Meanwhile, Walter discovers that Moira has been keeping the salvaged and sabotaged family yacht hidden in a warehouse. Flashbacks show that the archer forced Oliver to kill a quail for food, making it the latter's first kill. He was also taught to forget Laurel.

5. Damaged

Oliver hires Laurel as his attorney and his bail is accepted. Given Oliver's time on the island, the District Attorney offers an insanity plea along with indefinite treatment for post-traumatic stress disorder in a psychiatric facility. Oliver declines, instead offering to take a polygraph test to prove his innocence, which he then passes. While remanded under house arrest, Oliver throws a prison-themed party, maintaining his bachelor playboy façade. He has Diggle pose as the vigilante and stop a German arms dealer who is in the city to sell automatic weapons to the city's gangs. The plan works and the charges are dropped after Quentin kills a man who was sent by Moira's co-conspirator to murder Oliver. However, Laurel begins to suspect Oliver. Moira threatens her associate to stay away from her family. Walter leaves the house after confronting Moira about her lies. Flashbacks show Oliver caught and tortured by the armed men, led by Edward Fyers, for the location of the archer, who is revealed to be a former military officer, before being saved by him.

6. Legacies

Oliver begins preparing to attack another individual from the list, but Diggle argues that he should expand his work and help the police stop a group of bank robbers. Oliver initially refuses, believing that it detracts from his mission to right Robert's wrongs, but eventually agrees. Oliver deduces that the robbers are actually a family unit and that the leader Derek Reston worked for Queen Industries before Robert outsourced 1500 jobs to China, causing the Reston family to lose their home. Feeling guilty, Oliver tries to persuade Derek to do the right thing, but learns that the family are going to rob another bank. During Oliver's confrontation, Derek is fatally shot. Meanwhile, Tommy throws Laurel a fundraiser to support her law firm, CNRI, hoping to prove his love for her. Oliver and Moira manage to regain their emotional connection. Flashbacks show Oliver having a dream of Robert shaming him for his idleness and reveal how Oliver first discovered the target names in his father's notebook.

7. Muse of Fire

Moira is almost shot by a mysterious assailant who was attempting to assassinate an associate of mob boss Frank Bertinelli. Oliver attempts to infiltrate Frank's business to discover the identity of the attacker. Frank blames Chien and the Triad gang for the murders of his people. Oliver learns that the attacker is Helena Bertinelli, Frank's daughter with whom he had just been on a date. Helena reveals that she is looking for revenge against her father, who she believes had her fiancé killed for gathering evidence against him to give to the FBI. Helena and Oliver are abducted by Frank's right-hand man, Nick Salvati, in connection to the deaths; she divulges that she was the one gathering evidence and murders Salvati after learning he was the one who killed her fiancé. She also deduces Oliver's identity as the vigilante after witnessing him fight Frank's henchmen. In the end, Helena and Oliver share a kiss. Meanwhile, Tommy is cut off financially by his father, Malcolm, who is revealed to be Moira's co-conspirator. Laurel sticks with him, stating that she does not want him for his money. Walter returns home.

8. Vendetta

Oliver decides to teach Helena that there is justice outside of revenge after witnessing her try to kill the head of the Triad. Diggle expresses his disapproval, but to no avail. She dresses as a purple vigilante and the duo has another man from the list arrested. Helena starts to buy into the idea, but leaves him after finding out that Laurel is his former girlfriend, as she believes they are still together. Helena goes after the Triad, killing their leader. As a result, Chien and her men go after Frank, believing him to be responsible, but Oliver gets there in time to stop them. Oliver also stops Helena from murdering Frank, who is arrested instead; she threatens to reveal Oliver's identity if he tries to come after her in the future. Meanwhile, Tommy finally tells Oliver about Malcolm's actions and asks for a job at the club that Oliver is attempting to build, which he provides. With Felicity's help, Walter learns more about the secret organization of which Moira is a part, finding a notebook containing the list.

9. Year's End

Hunt is killed by a mysterious archer. Quentin deduces that a copycat is at work, but his superior publicly blames the hooded vigilante. Oliver plans a Christmas party at the mansion to bring the spirit of the holidays back to his family. He saves some hostages from the archer and the two are both injured after fighting, with Oliver realizing that Robert wasn't the author of the list. The archer escapes and is shown to be Malcolm. Walter finds out about the vigilante's objective and is kidnapped by one of Malcolm's associates. The organization's plan is revealed to be starting six months later, when thousands of people will die for what it believes to be for the greater good. Flashbacks show the Chinese archer, Yao Fei, capturing Fyers, who tells Oliver that the island was a prison for dangerous criminals and that his unit was tasked with exterminating the inmates, including Yao, after the program was shut down. Yao is caught by the unit while leading Oliver to a possible escape from the island; Oliver makes it out.

10. Burned

Six weeks after his fight with Malcolm, Oliver has paused all vigilante activity, despite insistence from Diggle. When a firefighter is killed in the line of duty, Laurel suspects that he was murdered and steals the phone the vigilante gave Quentin in order to contact him for help. Tracking down the suspect, Oliver is overpowered during the confrontation, but discovers that the murderer is Garfield Lynns, a firefighter thought to have died in a massive fire several years prior who survived with severe burns. In order to kill the fire chief, Lynns attends a fundraiser held to support the victims. As the vigilante, Oliver saves the chief just before Lynns commits suicide. The media calls the vigilante a hero; Oliver opts to resume his hunt of the list members. Moira decides to take over for Walter as Queen Consolidated's CEO. Quentin plants a listening device on the burner phone to monitor Laurel's communications with the vigilante. Flashbacks show Oliver killing a mercenary, wearing his uniform, and recovering his tools, including a map.

11. Trust but Verify

After an armored truck is robbed, Oliver believes that one of the thieves is Marine Ted Gaynor, a target on his list. Diggle dismisses Oliver's assumption, as Gaynor was Diggle's commanding officer during his time in Afghanistan. Oliver finds Gaynor and steals encrypted data, though Diggle prevents Oliver from getting any information directly from Gaynor. The data is revealed to be plans for robbing armored trucks, which Oliver uses to track the thieves. Diggle learns that Gaynor masterminded the robberies and is forced to join Gaynor's team, but backs out of helping them. Oliver arrives in time and kills Gaynor. Meanwhile, Thea tells Oliver she believes that Moira and Malcolm have been involved since before Robert's death. Oliver asks Moira, who states Robert was unfaithful. Tommy refuses to sign off on Malcolm's wish to sell the clinic established by his mother, who died when he was eight, blaming Malcolm for leaving him for years thereafter. Thea is arrested by the police after crashing as a result of drug use. Flashbacks show Oliver being captured by the mercenaries, as Yao was apparently working for them.

12. Vertigo

The judge dismisses Thea's plea bargain and orders the charges brought to trial. Helping Thea, Oliver begins hunting down the supplier of the drug, which is known as Vertigo; he discovers the supplier is called " The Count " and arranges a meeting through his contacts with the Solntsevskaya Bratva. The meet is broken up by the police and the Count injects Oliver with a dose of Vertigo. While mid-overdose, the latter still continues his investigation. He uses the ingredients to track the location of the Count. As the vigilante, Oliver is able to confront the Count and inject him with Vertigo, causing irreparable damage. Laurel persuades Quentin to get Thea two years of probation along with community service, which she begins by working at Laurel's legal office. Felicity provides Oliver the list of names Steele discovered and informs him that they came from Moira. Flashbacks show Yao overpowering Oliver in a mandatory duel and making him appear dead. His body is thrown over a waterfall, where he wakes up and finds an upgraded map, planted by Yao.

13. Betrayal

Moira denies knowledge of the list. Diggle starts to investigate her daily activities. Laurel asks the vigilante for help when criminal Cyrus Vanch is released from prison. Using the microphone inside the burner, Quentin and his team intercept the vigilante, who manages to escape. Vanch kidnaps Laurel. Quentin and the vigilante team up to save Laurel, as Quentin realizes that Vanch's contacts on the police force are how he knew about her. The duo saves Laurel, the vigilante only barely stopping Quentin from murdering Vanch in a blind rage. Laurel demands Quentin stay away from her for betraying her trust. In order to protect her, Oliver decides to cut his contact with her as the vigilante. Diggle presents evidence to Oliver that his mother is connected to the group he is hunting and that she also knew of Robert's yacht. Oliver goes to interrogate his mother as the vigilante. In flashbacks, Oliver meets Slade Wilson, an Australian Intelligence operative who came to the island to free Yao Fei. It is revealed that the masked mercenary who tortured Oliver was Wilson's partner, as Wilson has the same mask. He starts training Oliver to get him ready to infiltrate the airfield, the only apparent way out.

14. The Odyssey

Oliver is critically shot by Moira and escapes. He exposes his secret to Felicity and asks her to take him to his hideout. With Diggle's help, the bullet is removed and Oliver is stabilized. Felicity refuses to join Oliver's fight, but offers to help them find Steele. Oliver convinces Diggle to stop investigating Moira until they find out more about the organization. Flashbacks show Oliver being trained. Wilson reveals that his former partner, Billy Wintergreen, was sent with Wilson to find out Fyers' mission. Their plane was shot down and they were captured by Fyers' men. Wintergreen accepted Fyers' offer to change sides. After infiltrating the airstrip, Wilson explains his plan to send in an airstrike, wiping out Fyers' operation. Oliver heads out to save Yao, but is recaptured by Fyers. Before he can be executed, Wilson arrives, rescuing Oliver and killing Wintergreen. Although they miss the supply aircraft, Wilson and Oliver decide to continue to work together to get off the island, with Wilson stating that Fyers was hired by another party for a purpose. Yao is revealed to have changed sides because his daughter, Shado, is being held captive by Fyers.

15. Dodger

Oliver learns of a jewel thief named " Dodger " who uses hostages tagged with bomb collars. Felicity suggests that Oliver bug the phone of Detective McKenna Hall, an old friend of Oliver's, to gain information on Dodger. She also convinces Oliver to ask Hall out on a date so that he can have some downtime. Through the wiretap, Oliver determines Dodger's next location, but is stunned by a bomb thrown by the escaping thief. To draw out Dodger, Oliver donates antique jewels to an auction. It works but, when Felicity confronts the thief, he places a collar on her to ensure his getaway. Oliver manages to stop Dodger and deactivate the collar. Diggle starts dating his former sister-in-law, Carly. Thea has a run-in with a thief named Roy Harper. Moira makes a deal with Chien to have Malcolm killed so she can leave the secret organization, whose plan is called the "Undertaking". Flashbacks show Oliver trying to treat Wilson's infected wound by finding the herbs Yao used. He is intercepted by a wounded man who asks for help, but Oliver leaves him, believing it to be a trap.

16. Dead to Rights

Oliver kills a hired gunman and realizes that the latter's target is not yet safe. Chien hires Lawton, who survived Oliver's attack, to take out Malcolm after the previous gunman's death. Malcolm asks Tommy to attend an award ceremony where Malcolm will be receiving a humanitarian award; Tommy is persuaded by Oliver to attend. At the last moment, Oliver discovers that Malcolm is the target and races to the event to save him. Although he is almost caught by Hall, Oliver manages to get Malcolm away from Chien's men. Malcolm is shot with one of Lawton's poisonous bullets and Oliver is forced to reveal his identity to Tommy in order to help save Malcolm's life. Malcolm and Tommy reconcile. Malcolm tells Moira about his belief that someone from the organization attempted to murder him. Laurel is confronted by her mother, Dinah, who states that Sara, Laurel's sister, might still be alive. During a flashback, Oliver is shown repairing a damaged radio, which Wilson uses to tune into Fyers' radio communications. They find out that Fyers possesses an advanced anti-aircraft missile launcher.

17. The Huntress Returns

Helena returns to Starling City to kill Frank after she learns that he plans to make a deal with the FBI for witness protection. Oliver opens his nightclub, Verdant, and refuses her request for help; she attacks Tommy to force his assistance. Helena is captured by the police's trap. Oliver breaks her out to protect his secret and demands that she leave Starling City. Instead, she forces Felicity to find Frank's location. Oliver manages to stop Helena from murdering Frank but, when Hall arrives, Helena shoots her and escapes. In the hospital, Hall breaks up with Oliver, announcing that she is moving to Coast City for her physical therapy. Meanwhile, Tommy's knowledge of Oliver's secret is affecting his relationship with Laurel, but Tommy reconciles with Oliver. Dinah presents her evidence of Sara's existence to Quentin and Laurel. Thea and Roy get closer. In a flashback to the island, Oliver and Wilson steal the circuit board of the anti-aircraft missile launcher, which the latter states can start a war, and offer Fyers a trade of the board for a way off the island.

18. Salvation

Another vigilante appears in Starling City and kidnaps one of Oliver's targets, a slumlord who had charges dropped against him because he was able to pay off the District Attorney. The new vigilante, who is identified as Joseph Falk, kills the slumlord over a live broadcast. Falk murders several prosecutors the same way before going after Harper. Diggle finds out that Falk is using an abandoned subway car; Oliver is able to catch the car and kill Falk. Oliver realizes the secret organization's plan involves The Glades, a neighborhood filled with crime. Laurel proves to Dinah and Quentin that Sara is not alive. It is revealed that Dinah knew of Sara's plan to escape with Oliver. Malcolm contacts the Triad to find the traitors. Moira turns over her co-conspirator, Frank Chen, to Malcolm, who kills Chen, believing her to be innocent. Flashbacks to the island show Oliver and Wilson freeing Shado, but at the cost of Fyers reacquiring the board. She claims to know Fyers' scheme.

19. Unfinished Business

When a girl dies after using a new form of Vertigo, Oliver sets out to interrogate the Count and determines the latter has lost his mind from the Vertigo overdose Oliver gave him. When news reports state that the Count escaped the asylum, Oliver suspects that the Count was faking his mental illness. Meanwhile, Quentin finds loose connections between Tommy and Vertigo. Attempting to uncover the truth almost leads to him discovering Oliver's hideout. Oliver realizes that the Count's psychiatrist is behind the re-emergence of Vertigo. Oliver kills the doctor and opts not to kill the Count, who has truly lost his mind and was the fall guy for the doctor's actions. Tommy quits the club after learning that Oliver suspected him of drug dealing; Malcolm gives him a job. Oliver decides to help Diggle find Lawton, the man who murdered Diggle's brother. In a flashback, Shado reveals that Yao Fei took the blame for a massacre committed by the Chinese government and was subsequently exiled to the island. Now, Fyers is using him as a scapegoat for his schemes. She begins training Oliver to use a bow.

20. Home Invasion

Laurel represents the Moore family in suing a corrupt businessman, Edward Rasmus, who then puts a hit on the family; the couple's young child is the sole survivor. Laurel takes the boy into her custody and is saved by the vigilante from the hitman's attempt to finish the job. Tommy suggests that they go to Oliver's for protection. An operation headed up by A.R.G.U.S., a government organization, is set to capture Lawton, but Oliver chooses the Moores' case. As a result, Lawton escapes and Diggle decides to leave Oliver, who forces Rasmus to confess his crimes, leading to the latter's arrest. After murdering Rasmus, the hitman heads to the Queen residence to kill all the remaining witnesses, but Oliver manages to kill him. Tommy opts to leave Laurel, believing that he could never compete with Oliver should she discover him to be the vigilante. Elsewhere, Roy starts searching for the vigilante and Thea agrees to help. During a flashback to the island, Shado continues teaching Oliver to use a bow and Yao Fei brings Fyers' men to the hideout.

21. The Undertaking

Oliver tracks down an accountant for the secret organization and steals his laptop. While decrypting it, Felicity uncovers a link to Walter—a money transfer was made to Dominic Alonzo, an underground casino owner who was hired to kidnap Walter. The pair infiltrate the casino and Alonzo claims that Walter is dead. Oliver informs his family and Moira confronts Malcolm, who proves to her that Walter is still alive. Oliver, who was listening in, discovers that Malcolm is heading the secret organization and uses Felicity to ascertain Walter's location. As the vigilante, Oliver frees Walter. Meanwhile, Laurel asks Tommy for the truth about why he left and Tommy states that Oliver still loves her, a claim Oliver confirms. Oliver asks Diggle to help him stop the "Undertaking". In a flashback, Robert is shown disagreeing with Malcolm's proposal, which would involve leveling the Glades with a machine five years hence, killing thousands of people in order to rebuild the area. As a result, Malcolm has a bomb planted on the Queens' yacht, right before Robert boards it for China with a plan to stop Malcolm.

22. Darkness on the Edge of Town

Malcolm kills the scientists who worked on the machine. Diggle, disguised as the vigilante, kidnaps Oliver and Moira, a ruse by Oliver to uncover the truth. The plan works and Oliver's team breaks into Malcolm's company for information. Quentin finally approves Laurel's feelings for Oliver, who realizes that he can cease being the vigilante if he stops the Undertaking. Thus, Oliver reconciles his romance with Laurel and the two make love, which Tommy happens to witness. Malcolm has the device moved. Oliver attempts to kill him and Malcolm reveals that he is the other archer; the two fight until Malcolm gets the upper hand, discovering Oliver's secret. Meanwhile, Walter files for divorce, citing his knowledge of Moira's involvement in his kidnapping. Roy wants to be trained by the vigilante and pushes Thea away from himself. In a flashback, the man Oliver chose not to help is working for Fyers, who plans to cripple the Chinese economy by blowing up commercial planes going into the country. Fyers' employer is shown to be a woman. He murders Yao Fei after forcing him to take credit for the attacks via video recording.

23. Sacrifice

Malcolm imprisons Oliver, who later manages to escape. The latter confronts Moira about the Undertaking, which prompts her to hold a press conference for the city about her involvement with Malcolm and the plan to destroy the Glades, resulting in her arrest. Malcolm confirms her claims to Tommy and reveals that he is the other archer. Quentin, with help from Felicity, is able to dismantle the device. Diggle and Oliver go after and mortally wound Malcolm, who states that there is a second machine just before he dies. The device activates and begins to level the east side of the Glades. Thea goes to the Glades to save Roy, who decides to stay and help others. Laurel is stuck in her office, but Tommy arrives and helps her escape before being trapped himself. Oliver arrives too late, as Tommy has already been mortally wounded by debris. The two tearfully make amends with each other before Tommy dies, leaving Oliver grief-stricken. In a flashback, Fyers fires a missile at an approaching airliner, but Oliver and Shado manage to override the coordinates and destroy the missile. Afterward, Oliver kills Fyers, having gained relative skill with a bow.

Season 2

1. City of Heroes

Following the Glades' destruction and Tommy Merlyn 's death, Oliver Queen returns to Lian Yu alone as penance for failing his city and Tommy. Felicity Smoak and John Diggle arrive and convince Oliver to return, informing him that his mother, Moira, is awaiting trial and that Queen Consolidated is under threat of takeover and dissolution by Isabel Rochev. Laurel Lance is now working for the District Attorney. Oliver learns a group of vigilantes dressed like "The Hood" are murdering others as earthquake retribution. They target Oliver twice before kidnapping his sister, Thea. Oliver saves her without killing anyone, leaving the vigilantes for Quentin Lance, who has been demoted to patrol officer. Roy Harper, also trying to protect the Glades, is rescued by an unknown female vigilante. Using Walter Steele 's help, Oliver saves his company and forces Rochev to accept a partnership. Thea reconciles with Moira. Oliver decides to honor Tommy's memory both by becoming a hero in Starling City and finding a new name for his alter ego. In a flashback, Oliver, Shado, and Slade Wilson encounter new armed men after months of believing they are alone. The newcomers are revealed to be searching specific graves.

2. Identity

Roy fails to stop a truck robbery committed by Chien Na Wei. When Oliver attempts to convince Roy to stop being a vigilante, Oliver learns that the hospital in the Glades is having its medicine stolen. Oliver sets a trap for Chien, who escapes after having Ben Turner, a henchman with claws, fight him; the police arrive and the two escape. Diggle is revealed to have ended his relationship with Carly. Oliver decides to work with Sebastian Blood, an alderman for the Glades, to bring awareness and help for the people in need, but is forced to abandon his appearance at a charity event to instead stop Chien, who then gets arrested. Blood lambastes him in the press for flaking. The vigilante asks Roy to stop fighting in his name, but instead provide him intel on the Glades. Afterwards, Laurel, blaming the vigilante for Tommy's death, sets a trap for him, seemingly surrounding him with police. In a flashback, Slade advises Oliver not to let his relationship with Shado get too serious. The trio discovers a cave containing the remains of several cranially disfigured World War II Japanese soldiers.

3. Broken Dolls

Oliver assigns Roy to track a woman who inadvertently tries to be a vigilante; she helps him escape the police through her connection to a woman named Cindy. Quentin learns that the serial killer Barton Mathis, whom he arrested years earlier, escaped from prison during the earthquake and is on a killing spree again. Believing the vigilante's claims that he's changed, Quentin enlists his help. The team discovers the link between all of the victims. Oliver learns that Mathis has abducted Quentin and Laurel, planning to kill the latter. Oliver saves them right before the female vigilante shows up and murders Mathis. Oliver believes that she has a personal connection with him. Laurel decides that she must blame herself instead of the vigilante for Tommy's death. The District Attorney announces his intention to seek the death penalty for Moira. She tells her lawyer not to fight it, since she had connections with Malcolm Merlyn that she does not want revealed to her children. The female vigilante murders an operative of Ra's al Ghul, her former master. In flashbacks to the island, a ship starts bombarding Oliver and Slade. Oliver finds himself imprisoned with other inmates on a ship called the Amazo.

4. Crucible

Felicity realizes that the female vigilante has been following Laurel, not Oliver. Oliver manages to ambush her and discovers that she is Sara, Laurel's sister who was believed to have drowned. Weapons shipments keep being intercepted by a gang leader calling himself "The Mayor", who assaults a gun rally hosted by Oliver and Blood. Cindy is shot in the process, but Roy saves her. Felicity manages to identify the Mayor as Xavier Reed and tracks him down. Oliver recruits Sara to assist him in capturing Reed. Afterwards, a corrupt police officer brings Reed to an unknown location, where Blood, called Brother Blood by his associates, injects him with a green substance that kills him. He orders another person be brought for the substance. Meanwhile, Laurel develops a drinking problem and refuses help from Quentin and Oliver. In response, Oliver asks Sara to reveal herself to her family, even though he knows they will stop talking to him for lying. In flashbacks, Oliver is questioned about the Japanese bodies but, when he refuses to answer, he is taken to an interrogation room where he first learns that Sara is alive.

5. League of Assassins

Sara and Oliver are attacked by a man dressed like Malcolm Merlyn. Sara states that the man, Al-Owal, is a member of the League of Assassins, of which Malcolm was also a member, and is targeting her for leaving. Al-Owal threatens to murder her family. Oliver manages to protect Laurel, but Quentin refuses to heed Felicity's warning. Sara reveals her identity to him and seeks refuge in a clock tower. They ask for Oliver's help in stopping another attack, with Sara killing Al-Owal and sending a warning to Ra's. Afterwards, Sara decides to leave Starling City to keep her family safe, entrusting her secret with Quentin. Thea and Oliver tell Moira that her secrets will not make them leave her. She agrees to fight the death penalty. In flashbacks, after being left adrift from the Queen's Gambit wreckage, Sara is rescued and brought aboard the Amazo, where she meets Dr. Anthony Ivo, who asks her to help him with his experiments in order to save humanity. Later, she injures Oliver whilst on the Amazo.

6. Keep Your Enemies Closer

After A.R.G.U.S. agent Lyla Michaels, Diggle's former wife, goes missing, Oliver charters a trip to Russia to help Diggle find her when they learn that she was following a lead on Floyd Lawton 's whereabouts. Isabel Rochev joins the flight, believing that Oliver is trying to meet with a subdivision of Queen Consolidated behind her back. Once there, Oliver and Diggle learn that Lyla is being held in a gulag. They enlist the help of a Russian contact Oliver first met aboard the Amazo. Following their plan, Diggle is arrested and sent to the gulag to rescue Lyla. Oliver has a one-night stand with Isabel. Diggle finds Lawton among the inmates. The pair is forced to team up to save Lyla and escape. Afterwards, Diggle lets Lawton go for helping him save Lyla; in return, Lawton states that he was contracted to kill Diggle's brother by an organization called H.I.V.E. Diggle and Lyla start up again. In flashbacks, Ivo tells Oliver that the Japanese soldiers were transporting "Mirakuru", a secret serum for human enhancement. Later, Sara plays Oliver into revealing that Shado and Slade are still alive. Oliver realizes Sara has betrayed him by revealing his identity to Ivo.

7. State v. Queen

During the earthquake, The Count escaped from the prison to which he was transferred after recovering from his psychosis. Afterwards, The Count began poisoning civilians, including Diggle and the Assistant District Attorney. The Count reveals in a broadcast that the cure to the sickness is to take Vertigo. In court, Laurel uses an affair between Moira and Malcolm to cast doubts on Moira's defense. Felicity is captured by The Count. In order to protect Felicity from being injected with Vertigo, Oliver is forced to kill The Count. Meanwhile, Blood, hired by The Count to murder the vigilante now known as "the Arrow", is informed that one of his test subjects named Cyrus has survived his injection, feeling "stronger". Ultimately, Moira is exonerated by the jury; she later learns that Malcolm, alive and well, rigged the trial. He also reveals that he now knows Thea is his biological daughter. In a flashback to the island, Shado and Slade rescue Oliver and Sara after Dr. Ivo and his men travel to the island to locate the Hosen, a stone arrowhead which contains coordinates to the wreckage of the Japanese submarine.

8. The Scientist

When a masked thief with superhuman strength steals a centrifuge from Queen Consolidated, Central City CSI Barry Allen arrives to help with the investigation. Later, he states that he is searching for super-powered beings in the hope that he will find his mother's murderer, thereby exonerating his accused father. Oliver realizes that the thief was enhanced using the same serum for which Ivo was searching. Roy starts to help Cindy find her missing friend, a failed subject of Blood's experiments. Oliver shoots Roy in the leg to prevent him from getting further involved. Oliver tracks the thief, but is injected with an unknown toxin. In order to save Oliver's life, Felicity reveals his identity to Barry so he can help find an antidote. Meanwhile, Merlyn puts pressure on Moira to tell the truth to Thea. Moira instead contacts Ra's, who wants to kill Merlyn for breaking the League's code by destroying the Glades. As a result, Merlyn leaves. In a flashback to the island, Oliver and Shado find the Mirakuru but, when they inject it into Slade without the required sedative, his heart stops just as Ivo arrives with his men. This episode, along with "Three Ghosts", serves as a backdoor pilot to The Flash.

9. Three Ghosts

Barry manages to save Oliver's life. Barry and Felicity are able to identify the thief as Cyrus Gold and locate him. While continuing to investigate the death of Cindy's friend Max, Roy is captured by Cyrus and brought before Blood, who injects him with the Mirakuru, killing Roy. Oliver arrives and murders Cyrus, simultaneously destroying the centrifuge and the remaining serum. Oliver revives Roy, but worries that the serum may affect him negatively. Slade is revealed to be alive in the present and the one orchestrating Blood's dealings; he orders Blood to leave the Arrow alone so that he can deal with him personally. While Roy recovers at the Queen mansion, the serum injection heals the arrow wound in his leg. Barry leaves a domino mask so Oliver can better hide his identity and returns to Central City. While in his lab, Barry is hit by strange lightning caused by an accident at the particle accelerator. In flashbacks, Ivo tells Oliver to choose between Sara and Shado. When Oliver steps in front of Sara, Ivo murders Shado, but flees when Slade turns up with super-human strength and kills his men, leaving the Mirakuru behind. This episode, along with "The Scientist", serves as a backdoor pilot to The Flash.

10. Blast Radius

Oliver continues his search for the man in the skull mask while Felicity travels to Central City to visit Barry, who is in a coma after being hit by lightning. Serial bomber Mark Scheffer, who goes by the name "Shrapnel", sets off bombs across Starling City as an anti-government movement. Blood begins his campaign for mayor and decides to organize a Unity Rally for the city. Scheffer targets the rally, but Oliver is able to stop him and get him arrested; the bombs are disarmed. During the commotion, Thea witnesses Roy using his new strength and confronts him. As the Arrow, Oliver makes an alliance with Blood. Meanwhile, Quentin starts looking for Cyrus' mole in the police department. Investigating Blood, Laurel visits a mental institution where she finds Blood's mother, who reveals that he killed his father and put her in the asylum to cover it up. In a flashback, Slade experiences adverse effects on his mind and personality from the Mirakuru, which leads to him secretly separating from Oliver and Sara.

11. Blind Spot

Blood visits his mother and murders her after learning that she told Laurel the truth. Oliver continues his search for the man in the skull mask and receives help from Laurel, who suspects that it is Blood. Fearing that he will be discovered, Blood has Laurel arrested for drug possession by his disciple, Officer Daily. Afterwards, he arranges her kidnap to lure out the Arrow. The latter comes to rescue her but, during the fight, Laurel kills the masked man, revealed to be Daily and unknowingly throwing suspicion off Blood. Laurel is cleared of all charges, but fired because of her addiction. Slade, now wearing a specific suit and mask, is shown to have planned for Blood to get intimate with Laurel in order to hurt Oliver. Meanwhile, Roy and Cindy attempt to use his new powers to stop a murderer, but Roy goes overboard and puts the man in the hospital. The Arrow convinces Roy to train under him in order to control his new powers and altered mental state. In flashbacks, Sara initially considers an offer from Ivo to return the Mirakuru in exchange for safe passage off the island, but changes her mind.

12. Tremors

Ben Turner escapes from prison with assistance from H.I.V.E. associate Milo Armitage, who pays him to steal a prototype of Malcolm's earthquake machine. Oliver tells his teammates that Slade got angry when he found out how Shado died, as Slade was in love with her, and attacked him, which ended with Oliver putting an arrow in his eye. The Arrow tracks down the device and is forced to reveal his identity to Roy in order to get his help in destroying it. Meanwhile, Laurel learns that she may be disbarred because of her addiction and spirals further out of control. Oliver convinces Sara to reveal her identity to Laurel. Walter gets Moira to run for mayor against Blood; she states that it is necessary for the campaign that it not come out that Thea is not Robert 's biological daughter. Moira's obstetrician knows the truth, so she asks that he be handled. A.R.G.U.S. agent Amanda Waller propositions Turner with commuting his sentence in exchange for him joining a squad she is forming. In flashbacks, Oliver stops Slade from destroying Ivo's freighter with Fyers ' missile launcher so they can instead capture the freighter.

13. Heir to the Demon

Nyssa al Ghul, the daughter of Ra's and a member of the League, arrives in Starling City to convince Sara to return to Nanda Parbat with her. It is revealed that the two have a romantic history. Sara refuses, so Nyssa kidnaps her mother and threatens to kill her if Sara does not agree to return. Instead, Sara drinks snake venom. The Arrow arrives with an antidote and Nyssa releases Sara from her obligation to the League. Meanwhile, as Moira begins her political campaign, Felicity discovers that Thea's true father is Malcolm and tells Oliver, who chooses to support Moira's campaign publicly while privately renouncing their familial relationship. Although Sara is welcomed back by her parents, Laurel angrily yells at her. Sara later joins Oliver and they have sex. Slade decides to deal with Moira's campaign against Blood. In flashbacks, Sara and Laurel get into an argument after Laurel tells her that she and Oliver plan on moving in together; Sara agrees to meet Oliver at the docks. Afterwards, Laurel and Quentin watch a news report about the Queen's Gambit going missing. Moira informs them about Sara.

14. Time of Death

William Tockman orchestrates the heist of an electronic device that will allow him to access any bank vault. Oliver and Sara start working together to stop him, foiling one of his robberies. In response, Tockman uses the machine to hack into the computer servers at Oliver's hideout and overload them so they explode. Felicity, feeling left out with Sara now part of the team, attempts to bait Tockman into coming after one last score. Oliver, Sara, and Diggle arrive in time to protect Felicity, but she takes a bullet to save Sara before knocking Tockman unconscious, feeling part of the team again. Meanwhile, the Lances attempt to have dinner together and it is revealed that Sara and Oliver are in a relationship, much to Laurel's anger. Later, after a vicious argument with Oliver, Laurel reconciles with Sara and attends an A.A. meeting with Quentin. Slade makes his presence known to Oliver by coming to his home and meeting with Moira. In flashbacks, Sara befriends Cindy after promising her dying father, a pilot shot down while flying over the island, to look after her. From the plane, they recover a parachute, which they plan to use to take the freighter.

15. The Promise

Oliver, Moira, and Thea give Slade, who has funded Moira's campaign, a tour of the house. Sara and the rest of the team are notified and arrive to assist Oliver, forcing Slade to leave without engaging. Oliver deduces that Slade is the one controlling the man in the skull mask, all in an attempt to create more Mirakuru. Slade informs Oliver that he is there to follow through with a promise he made to Oliver on the island. Later, it is revealed that Slade used the tour to plant cameras throughout the house. In flashbacks, Oliver, Slade, and Sara are able to board the ship. Sara frees the prisoners while Oliver and Slade go after Ivo, who tells Slade the truth about Shado's death. Slade turns on Oliver and imprisons him on the ship as Sara and the other prisoners escape to the island. Slade takes control of the ship, amputates Ivo's right hand, and tells Oliver that he kept the Mirakuru, having had Sara and Oliver previously destroy an empty box. He promises Oliver that he will not kill him until he has first made him suffer the loss of those he loves.

16. Suicide Squad

In a flashback to years prior in Afghanistan, Diggle and Lyla are leading a group of Afghan villagers when a wanted man, Gholem Qadir, is identified among them. During an ambush by the rebels, Diggle saves Qadir's life. In the present, Diggle and Lyla are called upon by Waller to lead her "Task Force X", also known as the "Suicide Squad", which consists of Floyd Lawton, Ben Turner, and Mark Scheffer being used as expendable assets. The Squad is sent after Qadir, who has developed a deadly nerve agent. Scheffer attempts to escape and is killed. After saving Qadir's life again through a faked assassination attempt, Diggle is invited to Qadir's home for a party. Once there, Lawton locates the agent and is used as the target marker for a drone strike on the house. Diggle decides to save Lawton while Turner murders Qadir; as a result, the drone misses the house and a Navy SEAL team is forced to destroy the agent. Oliver goes to Waller for help, revealed to have interacted with her in the past. She tells him that A.R.G.U.S. has been tracking a new mercenary called "Deathstroke", whom the pair realize is actually Slade.

17. Birds of Prey

Oliver and Sara assist a police raid and, in the process, help capture Frank Bertinelli. Oliver quickly realizes that Helena will return to murder Frank once she hears the news. Laurel is asked to return to the District Attorney's office to try Frank's case. Helena shows up at the courthouse and takes hostages in exchange for Frank. Sara attempts to rescue Laurel, but Helena overpowers her and demands that Oliver deliver Frank in exchange for Laurel. Oliver complies, but Frank is killed in a crossfire with the SWAT team; Quentin ultimately arrests Helena after Sara stops her. Helena tells Oliver that he was right to discourage vengeance. Despite only bringing in Laurel as a ruse for Helena, the District Attorney rehires Laurel to avoid a scandal. Roy breaks up with Thea, taking Oliver's advice. Slade drives by and gives her a ride. In flashbacks, Slade demands Sara return Hendrik, one of the escapees who can fix the engines of the ship, threatening to murder Oliver if she does not comply. Sara and the other escapees prepare to send Hendrik back against his will while Slade has the same tattoo that was on Shado's back drawn on Oliver's as a reminder.

18. Deathstroke

Slade kidnaps Thea. Oliver gives temporary CEO status to Isabel in his absence and later reconciles with Moira. Isabel uses her momentary power to convince the board of directors to make her position permanent, thus allowing her company to take full control of Queen Consolidated. When confronted, Isabel reveals that she has been working with Slade the entire time and tells Oliver where Thea is being held. Oliver arrives, but Thea has already been released—her kidnapping was a diversion from Slade's real plan to free a group of convicts to use as Mirakuru test subjects. Thea confronts Oliver and Moira, saying that Slade told her that her biological father is Malcolm. Quentin is arrested for aiding the Arrow. Roy leaves Starling City. Polls show Moira's chance of winning the election has increased. Isabel tasks the company's scientific division with working on Mirakuru. Slade, now an announced fugitive, visits Laurel and reveals that Oliver is the Arrow. In flashbacks, Sara attempts to use the trade for Oliver as a moment to kill Slade, but fails. A hallucination of Shado convinces Slade to spare Oliver and Sara, leaving Ivo with them on the island.

19. The Man Under the Hood

Oliver's team destroys Isabel's lab so that Slade cannot use it to mass produce Mirakuru. In response, Slade steals an electronic Skeleton Key from Oliver's hideout. He uses it to get a bio-transfuser from the S.T.A.R. Labs facility where Caitlin Snow and Cisco Ramon work so he can transfer Mirakuru-infused blood to the freed convicts. Oliver tracks down Slade and discovers that he is using a kidnapped Roy as the blood donor. Oliver rescues Roy; in the process, Isabel, who is revealed to have been involved with Robert previously, is critically shot. Oliver states there is a cure for Mirakuru and Felicity enlists the help of Caitlin and Cisco. Slade's super soldiers gather and he uses his blood to both heal and empower Isabel. Meanwhile, Laurel discovers that Sara is the female vigilante. Laurel tries to tell Quentin about the Arrow's identity, but he dissuades her from telling anyone. Laurel later blackmails her supervisor into releasing and reinstating Quentin. Thea leaves home, even after Oliver tells her that Robert knew about her paternity. In flashbacks, Oliver kills Ivo on his request after Ivo tells him the location of the Mirakuru cure.

20. Seeing Red

Roy goes on a rampage, overwhelmed by the Mirakuru and no longer thinking clearly. During a fight, Oliver's leg is significantly injured and Roy escapes. Sara decides that Roy must be killed, but Oliver disagrees. Roy comes to Verdant and Oliver uses the opportunity to inject Roy with pit viper venom, knocking him unconscious and keeping him sedated until the cure can be found. Sara feels that she is not good enough for Oliver and leaves the city to find a friend of hers. Meanwhile, Thea continues to distance herself from her family, so Moira opts to drop out of the mayoral race. When Oliver dissuades her, she reveals that she has known Oliver was the Arrow since last year's earthquake and is proud of the man he has become. Moira, Thea, and Oliver are attacked by Slade, who tells Oliver to choose between his mother and sister like he did with Sara and Shado. When Oliver refuses, Moira sacrifices herself and is murdered by Slade. In a flashback to seven years prior, Oliver has gotten a young woman, Samantha Clayton, pregnant, so Moira pays Samantha to tell Oliver that she had a miscarriage and leave Starling City.

21. City of Blood

When Oliver doesn't show up at Moira's funeral, Diggle and Felicity enlist the help of Amanda to track him down. They find him in a secret hideout, where he tells them he intends to surrender to Slade and face his fate in order to protect everyone else. Meanwhile, Isabel returns and shuts down Verdant, forcing Thea to choose to leave Starling City, and Sebastian is sworn in as Mayor. Diggle and Felicity inform Laurel of Oliver's intention to surrender to Slade. Laurel confronts him, revealing that she knows he is the Arrow. She tells him that Sebastian is working with Slade and that she has documented proof that Sebastian knew Slade was going to murder Moira. After confronting Sebastian, Oliver decides that they have no choice but to kill Slade's army. The group of Mirakuru soldiers wearing Deathstroke masks wreak havoc on the city, cornering Oliver and Laurel. Diggle is confronted by Deathstroke armor-wearing Isabel. In flashbacks, Anatoly repairs the Japanese submarine. As he and Oliver prepare to attack the Amazo, Oliver gets a distress signal from Sara outside the submarine.

22. Streets of Fire

As Slade's army continues to terrorize the city, Felicity and Diggle outwit Isabel and escape. S.T.A.R. Labs finishes the Mirakuru cure, but Slade sends men to acquire it before Oliver. Finally trusting Quentin, the police force pledges to help the Arrow stop Slade's men and Quentin is reinstated to lead them. Slade reveals to Blood that he plans to destroy the entire city, people and all, in his quest for vengeance against Oliver. As a result, Blood steals the cure and gives it to Oliver in return for help saving the city. For his betrayal, Slade has Isabel kill Blood. Oliver tests the cure on Roy after Amanda states that she intends to bomb the city at dawn to prevent Slade's men from attacking the rest of the country. Meanwhile, Sara returns and saves Laurel, who gives her the alias "Canary". Malcolm saves Thea from an assailant and tries to convince her to leave with him, but she shoots him. In flashbacks, Oliver boards the Amazo to rescue Sara, who was captured by Slade, with specific orders for Anatoly to destroy the ship if they do not return within an hour. However, they are both captured by Slade.

23. Unthinkable

In flashbacks, the Amazo sinks as Oliver planned. He presumably kills Slade while Sara disappears overboard. Later, Oliver awakens in Hong Kong, where he meets Waller. In the present, the cure works on Roy. Sara arrives with Nyssa and the League to provide backup for Oliver, who gives Roy a red mask. They confront Slade and Isabel at Queen Consolidated. Nyssa murders Isabel and tells Oliver he needs to kill Slade, who escapes. Meanwhile, Diggle and Lyla free the Suicide Squad members and enlist their help in stopping the drone strike. Quentin is seriously injured. Thea meets up with Roy but, when she finds a bow and arrow, she loses trust in him and leaves Starling City with Merlyn. Oliver and his team successfully heal all of Slade's men. Oliver tricks Slade into kidnapping Felicity, believing she is Oliver's love. With Slade distracted, Felicity injects him with the cure. Oliver defeats Slade and Waller calls off the strike. Slade is locked in an underground A.R.G.U.S. prison on the island and Sara rejoins the League as payment for helping the city. Lyla is revealed to be pregnant by Diggle. Quentin collapses as a result of his injury.

Season 3

1. The Calm

The newly promoted Captain Quentin Lance calls off the task-force hunting the Arrow. Elsewhere, Werner Zytle, who has claimed the mantle of Vertigo, attempts to kill the Arrow in a bid to raise his profile. After losing the first battle, Oliver Queen and Roy Harper are able to stop Zytle with some help from Sara Lance, who is back in town for unknown reasons. Meanwhile, businessman Ray Palmer successfully acquires Queen Consolidated, intending to rebuild the city and rename it "Star City". John Diggle and Lyla Michaels welcome a baby girl, which convinces Diggle to take Oliver's suggestion and retire from field duty. Oliver and Felicity Smoak go on a first date, but Oliver ends it, explaining how he cannot be both the Arrow and Oliver, although he acknowledges loving her. Sara is shot in the chest with arrows by an unseen figure before falling from a rooftop to her death. In flashbacks, Amanda Waller assigns agent Maseo Yamashiro as Oliver's handler. After numerous failed attempts to escape, Oliver agrees to proceed with his training to prevent Waller from murdering Maseo's family as punishment for his failure to restrain Oliver.

2. Sara

Laurel Lance takes Sara's body to the team. Quentin alerts Oliver to another archer in the city killing people, unaware of Sara's death. Oliver follows a lead and is able to identify the archer as Simon Lacroix. The group learns of Lacroix's next target and intercepts him. Laurel arrives, determined to avenge Sara's death. As Oliver attempts to dissuade her, Lacroix confirms that he was not in Starling City at the time of Sara's murder. The team buries Sara and Laurel chooses not to tell Quentin what happened. Diggle returns to field duty again. Meanwhile, Roy reveals to Oliver that Thea left town when she learned he was working with the Arrow. In Corto Maltese, Thea is shown with Malcolm Merlyn and has proven to be capable of defeating more than one henchman in combat. Felicity decides to work for Ray. In flashbacks, Oliver is tasked with killing Tommy Merlyn after he comes to Hong Kong, hoping to track Oliver through activity he saw on Oliver's email account. To save Tommy, Oliver pretends to kidnap him and tricks him into thinking the emails were a ruse to hold him for ransom. Maseo, posing as a police officer, then rescues Tommy.

3. Corto Maltese

With no more leads in Sara's murder, Oliver focuses his attention on bringing Thea home. Felicity is able to track her to Corto Maltese. Thea initially refuses to return. While he waits to convince her, Oliver assists Diggle on a mission for A.R.G.U.S. to ascertain the whereabouts of one of its agents, Mark Shaw, who has broken into the A.R.G.U.S. database and stolen information to sell on the black market. Oliver and Diggle manage to stop Shaw, who convinces Diggle to tell Waller that he is dead. After a last minute plea, and Oliver revealing the truth about Robert 's death, Thea agrees to return home, which Merlyn allows. Meanwhile, trying to emulate Sara, Laurel attempts to exact vengeance on the abusive boyfriend of a fellow AA member, but she is overpowered and ends up in the hospital. Later, she asks boxer Ted Grant to train her to fight after Oliver's refusal. With Felicity's help, Ray manages to open a file detailing advanced weaponry. Nyssa confronts Oliver and demands Sara's whereabouts. In flashbacks to six months prior, Merlyn begins training Thea to calm her mind and heal her emotional anguish, as well as master control over physical pain.

4. The Magician

Oliver informs Nyssa that Sara is dead; Nyssa reveals that Sara was sent by the League to confirm Merlyn is still alive. After tracking Merlyn, Oliver agrees to meet him in a public location, where Merlyn tells Oliver that he did not kill Sara, having only returned to Starling City for Thea. Nyssa kidnaps Thea in an attempt to draw out Merlyn, known by the League as the "Magician", but Oliver arrives to rescue her. Merlyn arrives shortly after to clear his name and insinuates to Nyssa that it was Ra's who had Sara murdered. Nyssa does not believe him, but Oliver does and vows to protect Merlyn for as long as he is in Starling. Nyssa warns Oliver that he has made a serious enemy of the League before leaving and reporting back to Ra's. Quentin gets worried about Sara's status. In flashbacks, Oliver completes his first assassination and learns that Waller was behind Edward Fyers ' actions on Lian Yu, where her intent had been to shoot down Chien Na Wei's flight. But since Oliver stopped the attack, Waller demands he help her find out the reason behind Chien's presence in Hong Kong.

5. The Secret Origin of Felicity Smoak

A cyber terrorist attacks Starling City, threatening to shut down all the banks and set everyone at an even socioeconomic status. While Oliver and Roy attempt to keep peace on the streets, Felicity works to find the virus. She quickly discovers that she designed the unstoppable virus five years earlier. Her mother, Donna, shows up unannounced and the two have a falling out their differences. Felicity soon realizes that Donna was unknowingly sent by the cyber terrorist—revealed to be Felicity's ex-boyfriend Cooper Seldon —who then kidnaps them both. Using Donna as leverage, Cooper forces Felicity to divert a set of armored vehicles, carrying newly minted money, to their location. She secretly uses a smart watch Ray gave Donna to also contact Oliver, who arrives with Roy and Diggle, stopping Cooper and his team. Felicity reconciles with Donna. Roy begins having nightmares that he was the one who killed Sara. Meanwhile, Laurel continues to train with Ted and tells him the real reason that she is learning to fight. Thea buys a house using the money she inherited from Merlyn and convinces Oliver to stay with her.

6. Guilty

In flashbacks, Maseo's wife, Tatsu, uses a type of meditation to help Oliver remember where a dead associate of Chien Na Wei's dropped a letter, hoping that he leaves her family soon. From the letter, the name Li Kuan Hui is extracted. In the present, a murderer begins taking out gang members; when a body shows up in Ted's gym, he becomes a suspect. Ted tells Oliver that he was once a vigilante who retired after a drug dealer was accidentally beaten to death. Ted reveals the killer is his former protégé, Isaac Stanzler, who was also responsible for the death of the dealer; Isaac is bested by Oliver before escaping. Isaac kidnaps Ted and Laurel, but Oliver and his team are able to successfully stop him. Meanwhile, Roy tells Felicity about his dreams and later confesses to Oliver and Laurel. Using the technique learned from Tatsu, Oliver helps Roy access his memories to realize that he did not murder Sara; however, Roy discovers he did kill a cop while under the effects of the Mirakuru. Ted decides to continue training Laurel. Isaac is confronted by a female archer calling herself " Cupid ".

7. Draw Back Your Bow

Cupid, who was saved by the Arrow during Slade Wilson 's Siege attack, murders Isaac and dresses up his body as the Arrow. Following a lead, Oliver learns that she is a former cop named Carrie Cutter who is obsessed with him as a result of her condition. Carrie uses a old confidential informant to track down Oliver's hideout under Verdant, which has been reopened by Thea. Oliver lures Carrie away and rejects her romantic advances right before she tries to off the both of them. He stops her, reinforcing Carrie's delusion that he is in love with her. Subsequently, Oliver gives her to A.R.G.U.S. as a new member of their Squad. Meanwhile, Ray rebrands Queen Consolidated into Palmer Technologies. Oliver struggles with how much time Felicity is spending with Ray; the situation is made worse when he finds them kissing. Ray is later shown working on a personal exosuit design called A.T.O.M. Elsewhere, A killer using boomerang blades appears in the city. In flashbacks to Hong Kong, Oliver and Tatsu go off to find Maseo after he goes missing, during which time she ends her displeasure towards Oliver. They return home to find Maseo safe and sound.

8. The Brave and the Bold

Flashbacks to Hong Kong show Oliver learning how to effectively torture suspects to get information using his bow and arrow recovered from the island, which he used on Li Khuan Hui. In the present, Oliver and Roy track down the home of Digger Harkness, the boomerang-wielding murderer, but they only find A.R.G.U.S. operatives looking for the same man. Caitlin and Cisco arrive in Starling City to help Felicity investigate Sara's death. Digger attempts to kill Lyla; Roy, Oliver, and Barry Allen arrive and stop him. Later, Lyla reveals Digger was part of the Suicide Squad. Oliver's extreme interrogation methods lead Barry to question Oliver's emotionally stability. Digger finds Oliver's hideout, where he wounds Lyla before escaping. In order to leave town, Digger plants five bombs around the city. While Oliver captures Digger, Barry uses both his and Oliver's teams to defuse the bombs at the same time. Digger is incarcerated on the island with Slade. Lyla accepts Diggle's marriage proposal. Before Barry and his friends depart, he and Oliver decide to have a friendly duel. Note: This episode concludes a crossover event that begins on The Flash season 1 episode 8.

9. The Climb

The League demands Oliver find and turn over Sara's killer in 48 hours or they will begin murdering Starling City citizens, a mission led by his old friend Maseo, who has joined the League. S.T.A.R. Labs sends Felicity the DNA results, which appear to match Oliver. Realizing that she has been lying, the Arrow confronts Thea, who demonstrates her fighting skills before escaping. Later, Merlyn informs Oliver that he drugged Thea, then manipulated her into killing Sara and not remembering it. Merlyn filmed the event as leverage to force Oliver to take the blame and challenge Ra's to a duel, something no one has dared do in 67 years. Oliver is overpowered by Ra's, who impales him and kicks him over the side of a cliff. Meanwhile, Laurel reveals Sara's death to her mother, Dinah, and convinces her not to tell Quentin. Dinah asks her to avenge Sara's murder. Ray shows the A.T.O.M. design to Felicity and states his intention to use the exosuit to protect the city as a vigilante. In flashbacks, Oliver and Maseo learn that Chien has stolen an engineered supervirus. Chien breaks into Maseo's house, overpowering and kidnapping Tatsu.

10. Left Behind

In flashbacks, Oliver and Maseo steal the counterpart to the supervirus, thus making Chien's portion inert. Oliver also slips a GPS tracker onto one of Chien's men in order to locate Tatsu. In the present, Diggle and Roy work to continue protecting the city in Oliver's absence. With the Arrow missing, a new crime lord named Danny "Brick" Brickwell plots to take over the Glades. After Thea expresses concern over Oliver's absence, Merlyn investigates the site of the duel and brings the bloodied sword back to the hideout, proclaiming Oliver's death. Diggle discovers Brickwell's plan, to secure all the evidence against street enforcers so they are released from jail and forced to join his crew, and brings Roy to the police warehouse so the two of them can stop him. Fearing for their lives, Felicity decides to trap the duo in the warehouse and let Brickwell escape. Afterwards, Felicity proclaims the group non-existent without Oliver and quits both the team and helping Ray with his A.T.O.M. project. Laurel starts fighting Brickwell's operatives, donning an altered Canary costume. Merlyn advises Thea leave Starling City with him. Meanwhile, Maseo finds Oliver's body and takes it to Tatsu, who restores Oliver to consciousness.

11. Midnight City

While Oliver attempts to rest and heal, members of the League arrive, forcing Maseo and Tatsu to kill them to protect Oliver. Maseo wounds himself so Ra's will believe he fought to prevent Oliver escaping. Roy and Diggle warn Laurel to stay off the streets after Roy saves her from a fight. Brick kidnaps the city's aldermen, murdering one during a rescue attempt. In exchange for the remaining aldermen, Brick demands that the police presence be removed from the Glades for good. The team is able to locate the aldermen and successfully save them, but the Mayor still agrees to pull the Glades' police after Brick reveals that he has targeted every legislative body member. Meanwhile, Felicity decides to rejoin the group and help Ray with his plan. Merlyn tells Thea about Ra's; she convinces him to stay and fight instead of running. Chase, the DJ for Verdant, is shown to be a spy for the League, informing Maseo about Merlyn's decision. In flashbacks, Maseo and Oliver manage to rescue Tatsu.

12. Uprising

Flashbacks chronicle the death of Merlyn's wife, him killing the man believed to have murdered Rebecca, and his journey to the League to seek training. In the present, Oliver decides to return to Starling City. Tatsu informs him that, if he wants to defeat Ra's, he will need to seek swordsman training from a student like Maseo. With the police out of the Glades, Roy and Laurel are tasked with fighting Brick's men to keep the peace. To help track down Brick's location, Quentin gives the team all the information the police have on Brick. Merlyn spies on the group as they review the evidence against Brick, thereby discovering that Brick was responsible for Rebecca's death. Merlyn propositions the team join forces with him to take down Brick, but they refuse. Instead, they rally the citizens of the Glades to take on Brick and his men. Merlyn overpowers Brick just before Oliver arrives, persuading him to spare Brick's life and let the police arrest him. Cindy tells Quentin that she knows the new female vigilante is not Sara. Afterwards, Oliver asks Merlyn to train him so that he can take on Ra's.

13. Canaries

Werner Zytle escapes custody by poisoning a guard with Vertigo. As Oliver tries to keep Laurel from being a vigilante, Merlyn informs him that, to beat Ra's, he will need to bring Thea onto the team. Oliver reveals the truth to her, who accepts and praises him for the work he has been doing as the Arrow. Laurel tracks down Zytle and takes him on herself, only to be poisoned with Vertigo. She begins to hallucinate images of Sara, which attack her. Oliver and Roy arrive in time to get her back to the hideout for treatment. Oliver realizes that the group does not fight for him anymore, but rather for the city. Chase attempts to kill Thea, but Roy and Merlyn show up; Chase instead commits suicide. Oliver and Laurel successfully capture Zytle together. On Merlyn's advice, Oliver takes Thea to the island for training. Laurel finally tells Quentin that she has been using Sara's vigilante persona and about Sara's death, although he already knows both. In flashbacks, Oliver is captured by A.R.G.U.S. and interrogated over the location of Maseo and his family. Maseo is captured trying to save Oliver. Waller brings Oliver and Maseo to Starling City to find Chien.

14. The Return

While on the island of Lian Yu, Oliver begins Thea's training. He goes to the A.R.G.U.S. prison to visit with Slade, but discovers the guard dead and Slade missing. Oliver warns Thea and they find out that Merlyn had Slade freed as a part of their training. Slade arrives and captures them, imprisoning them in the A.R.G.U.S. cell. The duo manage to open the doors and escape. Oliver reveals to Thea that she killed Sara. Slade arrives and engages them in combat. Oliver dissuades Thea from murdering Slade, who gets imprisoned back in the cell. The Queens return to Starling City, where Thea confronts Merlyn for forcing her to kill Sara. Thea decides to work with him to fight Ra's, but denounces their personal relationship. Quentin blames Laurel for hiding the truth. In flashbacks, Oliver and Maseo start tracking an employee of Queen Consolidated who is associated with Chien. Oliver looks in on his family and learns that Thea is using drugs. Oliver and Maseo acquire the virus and arrest Chien. Oliver is introduced to General Matthew Shrieve, who promises to free him after he is debriefed in China.

15. Nanda Parbat

Oliver and Thea continue their training with Merlyn. Thea confesses the whole truth to Laurel, who instead blames Merlyn; Thea makes a deal to turn him over to the League. Laurel confronts Merlyn and is outmatched, but they are interrupted by Nyssa and the League, resulting in Merlyn's capture. Having imprisoned Nyssa, Oliver decides to go to Nanda Parbat to rescue Merlyn so Thea won't blame herself when she realizes that she has sentenced her father to death. Oliver and Diggle infiltrate Nanda Parbat, but walk into a trap set by Ra's. Oliver tells Diggle that Thea was not his only motive and that he could not accept defeat by someone else. Diggle states that he considers him a brother. Thea confesses the truth to Nyssa and offers her the chance at revenge. Ray tests the flight capabilities of his completed A.T.O.M. exo-suit. Instead of killing Oliver, Ra's expresses his praise for Oliver's courage and strength; he then asks Oliver to replace him as the head of the League. In flashbacks, Oliver is debriefed by Matthew and freed. On their way, Oliver and the Yamashiros are attacked. Oliver flees for safety with Akio, Maseo's son.

16. The Offer

Ra's explains that the localized pool of water in Nanda Parbat has healing effects that have allowed him to live far longer than any mortal man. The pool is becoming less effective on him, so Ra's is looking for a replacement. In a show of good faith to convince Oliver, Ra's releases Diggle and Merlyn, forgiving all blood debts. Oliver returns to Starling and releases Nyssa, who refused to kill Thea. Oliver and his team go back to stopping crime, battling a new criminal named Murmur, but Quentin tells the Arrow that he will not aid him anymore because the group hid Sara's death. Afterwards, Oliver realizes that he is not ready to give up being the Arrow; Oliver informs Maseo of his decision, who warns Oliver of the consequences of defying Ra's. Upset with Ra's for his offer to Oliver, Nyssa leaves him and returns to Starling City, befriending Laurel and deciding to train her. Ra's, dressed as the Arrow, frames the vigilante for murder. Thea leaves Malcolm and moves in with Roy. In flashbacks to Hong Kong, Oliver and Akio continue to be on the run, during which they seemingly stumble across a woman resembling Shado.

17. Suicidal Tendencies

Diggle and Lyla officially remarry, but Waller interrupts their honeymoon to recruit them for a Suicide Squad mission rescuing Senator Cray from a kidnapping. The kidnapping turns out be a ruse by Cray to help his bid for President. The squad rescues the hostages, but Floyd Lawton seemingly sacrifices himself so everyone can get out safely. He is announced as responsible for the kidnapping and Cray's involvement is covered up. The police issue a warrant for the Arrow, which Ray supports. Oliver discovers that Ra's has sent multiple assassins to impersonate him. In his new A.T.O.M. suit, Ray locates the Arrow and, through facial scans, learns his identity. Laurel refuses to accept Ray's evidence against Oliver. Ray engages Oliver in a fight, but Oliver disables Ray's suit. Oliver convinces Ray that he is being framed. Diggle decides to leave Oliver's team and Lyla resigns from A.R.G.U.S. Maseo, dressed as the Arrow, murders the mayor and shoots another arrow at Felicity. In flashbacks, Lawton struggles to transition back into society from the military, which is made worse by his wife and child leaving him. Lawton is propositioned by H.I.V.E. to assassinate Andrew Diggle, John's brother.

18. Public Enemy

Ray takes the arrow for Felicity. Quentin issues an arrest warrant for the Arrow and his team, including shoot to kill orders. Oliver uses Nyssa to track Maseo's location. Ra's appears and repeats his demand. The police arrive, but Oliver and his group manage to escape. Ra's kidnaps Quentin and reveals the Arrow's identity, which Quentin then announces at a press conference. Oliver decides to turn himself in in exchange for immunity for his teammates. Roy dresses as the Arrow, stops Oliver's transport van, and surrenders to the police, claiming that he has been the Arrow all along. Meanwhile, Ray has developed a deadly thrombus that has no known cure. He reveals that he has nanobots that can destroy the clot. Felicity injects them and saves him with the help of Donna. In flashbacks, the woman resembling Shado turns out to be her twin sister Mei. The assailants come after them, but Maseo and Tatsu arrive to rescue them. Before leaving, Oliver tells Mei that Shado and Yao are dead.

19. Broken Arrow

Roy is arrested and the District Attorney decides not to charge Oliver. However, Quentin knows the truth and continues investigating Oliver. Team Arrow starts working on how to stop metahuman Jake Simmons. Oliver enlists Ray's help. After a failed first attempt, Oliver and Ray sync their movements through a neural network but, when the network malfunctions during battle, Ray defeats Simmons himself and places him under S.T.A.R. Labs' custody. Cisco deduces that Simmons did not acquire his powers from the particle accelerator explosion. With the help of A.R.G.U.S, Roy fakes his own murder so that the public believes the Arrow is dead and Oliver innocent. As a result, Roy is forced to leave the city. Ra's visits Thea and impales her with his sword. In flashbacks, Oliver infiltrates A.R.G.U.S. to stop Waller, only to discover that she is a prisoner of Shrieve, who was behind the attack and plans to release the virus in Hong Kong. Oliver, Maseo, and Tatsu steal the vaccine and decide to stop Shrieve's plan.

20. The Fallen

Oliver rushes Thea to a hospital, where her death is said to be inevitable. Maseo contacts Oliver to let him know that, if he accepts Ra's offer, he will be able to use the Lazarus Pit to heal her. Malcolm warns against this, stating that the pit changes a person in their soul, but Oliver decides to take her to Nanda Parbat regardless. Thea is dipped into the pit and comes out healed, but in a state of confusion, her memories jumbled. Felicity has sex with Oliver before drugging him so the team, aided by Maseo, can sneak him out of the fortress. Cornered by the Assassins, Oliver wakes in time to order them to stand down. Afterward, Oliver returns to take his place as head of the League, alone. Thea wakes up in her apartment, her mind clear and distraught that Oliver sacrificed himself for her. Oliver renounces his old life, taking on an apprentice role in the League and the name "Al Sah-him" until he is ready to take over as the new Ra's. In flashbacks, Oliver, Maseo, and Tatsu go after the virus, but it is released during a fight.

21. Al Sah-Him

Oliver begins his training, which includes breaking down his psyche so that his allegiance is only to the League and his new identity as Al Sah-him. Ra's recounts the moment that he was chosen to become the leader of the League, a duel with his best friend Damien Darhk who saw himself as the heir. Ra's hesitated and Damien fled, stealing water from the Lazarus Pit and starting his own group. Damien is revealed to have hired Gholem Qadir and Mark Shaw. Subsequently, Oliver is directed to murder Nyssa. Oliver and the League come to Starling City, where team Arrow announce their protection of Nyssa. Oliver kidnaps Lyla to force the group to give her up. At the exchange, a fight breaks out and Nyssa is taken by the League. Oliver almost kills Diggle, but Thea, in her own suit, arrives and stops him. Felicity tells Thea that Roy is alive. In Nanda Parbat, Ra's orders Nyssa marry Oliver and Oliver use the Alpha/Omega virus to cleanse Starling City as a final act of commitment. In flashbacks, the vaccinated Oliver, Maseo, and Tatsu watch as the citizens of Hong Kong, including Akio, become infected.

22. This is Your Sword

In flashbacks, Maseo and Oliver go after Shrieve to see if he has a cure. They only succeed in leading Shrieve to their location, with Akio dying in Tatsu's arms. In the present, Diggle and Laurel patrol Starling City, taking on any criminals they meet. Thea finds Roy and reunites with him. Oliver learns that Maseo is the one who provided Ra's with the Omega virus when he originally came to Nanda Parbat. Sneaking away from the castle, Oliver is shown to have been in league with Malcolm, that his agreement to become Ra's' heir was a charade to get close to Ra's and slowly dismantle the League from within. On Oliver's advice, Malcolm uses Tatsu to convince the team of the truth. The group, including Tatsu, Ray, and Malcolm go to Nanda Parbat, where Tatsu kills Maseo just before they are overrun by the League and captured. Malcolm reveals Oliver's treachery to Ra's, but Oliver manages to convince him of his loyalty. Roy secretly leaves Thea. Ra's exposes the team, excluding Tatsu, to the virus before sealing them away in a cell. Afterward, Oliver and Nyssa get married.

23. My Name is Oliver Queen

While Ra's and Oliver head toward Starling City, the team wakes in the dungeon. Malcolm informs them that he secretly gave them the vaccine. Barry arrives and frees them. Oliver and Nyssa attack Ra's and the other Assassins. Ra's escapes with a canister of the virus, vowing to destroy Starling. Ra's reveals he has four targets. Felicity locates them and Oliver organizes the group, along with Quentin and the police, to those places, with Thea arriving in Roy's suit to help. Oliver duels Ra's while the team successfully stops the attack, minimizing casualties. Oliver kills Ra's before being saved from the police by Felicity in the A.T.O.M. suit. Afterward, Oliver decides to have a normal life with Felicity instead of operating as a vigilante, knowing that there are others who can take his place. Oliver cedes the title of Ra's to Malcolm, to whom Nyssa kneels, but promises vengeance. Ray begins testing a way to miniaturize his A.T.O.M. suit, resulting in an explosion. In flashbacks, Maseo executes Shrieve after hours of torture by Oliver's hand. Oliver boards a ship headed to Coast City, choosing to live a lonely life away from his family.

Season 4

1. Green Arrow

John Diggle, Thea Queen, and Laurel Lance continue fighting crime in Starling City, recently renamed 'Star City' in honor of Ray Palmer, who has apparently died in an explosion. The city's leadership, including Quentin Lance, assemble to discuss a criminal entity named the "Ghosts" who are terrorizing the city. Damien Darhk, revealed to be controlling the Ghosts, systematically begins assassinating the present leaders, but fails to kill Quentin. Laurel and Thea convince Oliver Queen, who was trying to propose to Felicity Smoak, to leave Ivy Town and return to help them, which Diggle reluctantly approves. Oliver realizes that Felicity has been helping the team. The group tracks the Ghosts, where they witness Darhk using some form of mystical energy manipulation. Oliver notices Thea's excessive aggressiveness. Working together, the team stops Darhk's terrorist attack. Diggle deduces that Darhk is leading H.I.V.E. Afterward, taking the name " Green Arrow ", Oliver broadcasts a message to the city vowing to be a beacon of hope, while Quentin is shown to be working with Darhk under duress. In flashbacks, Amanda Waller finds Oliver and forces him back to Lian Yu in order to assess a new threat. He is captured upon arrival.

2. The Candidate

Queen family friend Jessica Danforth decides to run for mayor. During her announcement, she is attacked by Lonnie Machin, an anarchist for hire working for Darhk. Oliver explains to his sister that her aggressiveness is a result of being in the Lazarus Pit. Diggle tells Laurel about H.I.V.E. The team successfully stops Machin, but Thea sets him on fire in the process. Later, Machin escapes police custody. Laurel decides to take Thea back to Nanda Parbat, both to find a way to stop the aggression and to bring Sara Lance 's body to the pit. Oliver runs for mayor after Danforth backs out of the race. Meanwhile, Felicity takes over for Ray at the company and tasks an employee named Curtis Holt with fixing the financial crisis. In flashbacks, Oliver defeats a soldier and is instructed by Waller to infiltrate the local military operation run by an officer named Reiter. Reiter recruits Oliver for his cause instead of killing him.

3. Restoration

Laurel and Thea arrive in Nanda Parbat and request Malcolm Merlyn use the Lazarus Pit for Sara. He initially refuses and tells Thea that she needs to kill some people once in a while to suppress the bloodlust. In order to appease her, he eventually agrees to revive Sara. When Sara returns feral, Nyssa al Ghul destroys the Lazarus Pit in retaliation and Merlyn has her imprisoned. Meanwhile, an A.R.G.U.S. operative brings Diggle information on H.I.V.E. operative Mina Fayad. Fayad meets with Darhk about the growing vigilante issue in Star City. She introduces a metahuman named Jeremy Tell, who can turn his playing card tattoos into physical projectiles. After Tell's initial failure, Darhk murders Fayad for challenging him. Felicity reveals to Curtis that she is aiding Green Arrow. Diggle and Green Arrow team up and take down Tell, who refuses to talk because he fears Darhk more. He is imprisoned in Iron Heights. In flashbacks, in order to impress his handler, Oliver uses torture techniques to interrogate the prisoners being used to harvest heroin-cocaine hybrid plants. He secretly frees a woman.

4. Beyond Redemption

Quentin has Green Arrow look into the death of two police officers and the group learns they were murdered by members of the Anti-Vigilante Task Force. Laurel brings Quentin to see Sara, who is chained up in the basement of Laurel's apartment. Felicity identifies Liza Warner as a suspect and, while searching for her, Oliver discovers Quentin meeting with Darhk. When confronted, Quentin reveals that Darhk threatened to murder Laurel. Darhk advises Quentin to kill Sara, but Laurel dissuades him. Green Arrow and the team stop the corrupt officers just before Liza attempts to kill the vigilante, but Quentin convinces her to surrender. Later, Oliver asks Quentin to spy on Darhk and announces his candidacy, Felicity opens an audio file of Palmer's apparent final moments, and Laurel finds that Sara has escaped. In flashbacks, Oliver gets Taiana, the woman he freed, to a cave and convinces an officer named Conklin of her death, but Conklin discovers Oliver's A.R.G.U.S. communication device.

5. Haunted

In flashbacks, Reiter dismisses Conklin's accusation of Oliver. Instead, he introduces them to a recent captive named John Constantine, who escapes and forces Oliver to help him locate a mystical object on the island. Afterwards, Constantine warns Oliver to be wary of Reiter's real plans and uses the object to cast a spell on him. In the present, Sara starts killing women and Green Arrow discovers she is alive. The team realizes that Sara is looking for Thea and plans to murder her. They capture Sara and Oliver contacts Constantine, who helps restore Sara's soul. Meanwhile, Darhk gives Quentin a new task to install a computer virus in a security company. Diggle goes along and sees his brother's name among the list of individuals being deleted by the virus. Later, Felicity and Curtis realize that Palmer is still alive and Diggle learns that his brother was killed because he was a drug cartel leader.

6. Lost Souls

As Oliver works on his campaign, Felicity continues searching for Ray with the help of Curtis. Ray is able to send a new message, letting Felicity know that he survived the explosion because his suit successfully shrank him down to a small size, that he is being held prisoner, and where to find the schematics to build a device to return him to his normal size. In a second message, Felicity discovers that Darhk is the one imprisoning Ray, hoping to get the technology from his suit. The team tracks Darhk to his hideout and, with the machine created by Curtis, they successfully save and restore Ray to normal size. Thea starts dating Alex Davis while Quentin and Donna Smoak start seeing each other, as well. Using Ray's technology, Darhk tests a power source on a mystical board. Meanwhile, Sara struggles with the bloodlust and decides to leave Star City to gain control. In flashbacks, Reiter sends Oliver searching for another ancient ruin that is supposed to yield a "gift" for Reiter. Conklin has a worker turn on Oliver. When Oliver kills the man in self-defense, it gives Conklin the opportunity to have Reiter punish Oliver.

7. Brotherhood

Following his ordeal, Ray refuses to return to Palmer Tech. H.I.V.E. destroys money meant for the city bank. John tells Oliver that H.I.V.E. murdered his brother Andy because he was a criminal rival. Darhk knows about Quentin's betrayal and tells him so. The group heads to a lab, where they are attacked by Darhk's men and John discovers that Andy is still alive, working for H.I.V.E. John refuses to see Andy as anything more than a traitor, unworthy of saving. The team finds out that Darhk uses pills to control his operatives' minds, which could have been administered to Andy. They locate him and the rest of H.I.V.E., successfully extracting Andy with help from Ray and John. When John confronts him with damning documents, Andy confirms their validity. Although Darhk fails to drain her lifeforce during an encounter, Thea learns that his powers may help cure her bloodlust permanently. In flashbacks, Conklin reveals that the worker Oliver killed was Vald, Taiana's brother, but Oliver diverts the accusation, arguing that Conklin sent Vald to murder him. Reiter uncovers the truth by using a mystical object and has Oliver whip Conklin as punishment. Oliver later convinces Taiana to help him find a map.

8. Legends of Yesterday

Malcolm orchestrates a meeting between Vandal Savage, Barry Allen, and Oliver. Savage demands they turn over Kendra Saunders and Carter Hall or he will destroy both Central City and Star City with the Staff of Horus. They devise a plan to deliver the pair as a ruse to get close enough to destroy the staff. The plan fails; Kendra and Carter are killed and Savage uses the staff to destroy everyone else in the city. Barry escapes and runs fast enough to go back in time to the point of the original negotiation. Barry informs Oliver of his time travel and the mistakes that led to their defeat. They change their plan and Barry is able to steal the staff. He and Oliver use it on Savage, burning his body. Afterward, Kendra and Carter decide to use their powers to help others in another city. Cisco gives her a tracking device. Meanwhile, Oliver learns about his son, William, and accepts the condition of Samantha Clayton, William's mother, not to tell William or anyone else about the paternity in order to be able to see him. Malcolm collects Savage's ashes while whispering, "You owe me one, buddy." Note: This episode concludes a crossover event that begins on The Flash season 2 episode 8. The two episodes also set up Legends of Tomorrow.

9. Dark Waters

Oliver's campaign starts an initiative to clean up the Star City bay. Darhk sends a drone to the bay and begins shooting at the volunteering citizens, injuring several. In response, Oliver reveals Darhk to the media as the leader of both H.I.V.E. and the Ghosts. In retaliation, Darhk crashes Oliver's campaign holiday party and kidnaps John, Felicity, and Thea. Oliver makes contact and agrees to exchange himself for them. Darhk tricks Oliver and attempts to kill them all in front of him. Malcolm, dressed as Green Arrow, and Laurel arrive to rescue everyone. Afterward, Oliver proposes to Felicity, who accepts. As they leave, Darhk's men shoot up Oliver's limo and hit Felicity, while Darhk reunites with his wife and daughter. Meanwhile, H.I.V.E.'s plan, entitled Genesis, is shown to include the mass growing of corn in a large field. In flashbacks, Oliver returns to the ship the Amazo and acquires the maps. However, Conklin finds Taiana alive and confronts Oliver.

10. Blood Debts

While Felicity undergoes multiple surgeries, Oliver and the team continue searching for Darhk. Oliver turns to Quentin for information on Darhk's whereabouts while John interrogates his brother Andy. They track down Darhk's hideout, but only find several dead Ghost soldiers and an anarchy symbol, deducing that Machin is back and out for revenge against Darhk. Machin is caught and Oliver interrogates him right before freeing him to go after Darhk, tracking him in the process. Andy locates Darhk's family house, where Machin is also headed; the group arrives and saves Darhk's family, but Machin escapes. Darhk grants Oliver time to spend with his own family before Darhk resumes trying to kill him. Meanwhile, Felicity is left paralyzed from being shot. John mends his relationship with Andy. Darhk's wife, Ruvé Adams, is revealed to be his accomplice and H.I.V.E.'s plan is shown to be about destroying the world and rebuilding it. In flashbacks, Conklin presents his proof to Reiter, who allows Conklin to whip Oliver as punishment until Reiter notices the spell on Oliver's abdomen. In exchange for Taiana's safety, Oliver agrees to help Reiter.

11. A.W.O.L.

Felicity returns home from the hospital, trying to figure out her place on the team now that she is a paraplegic. An A.R.G.U.S. agent seeks out John and Lyla Michaels for assistance, but is kidnapped before he can tell the pair anything. The pair goes to Waller, who secretly gives her a portable hard drive that reveals the operative was taken by an organization known as " Shadowspire ". John recognizes the name and recounts first meeting the war profiteering group in Afghanistan. With Andy's help, the team tracks Shadowspire. Oliver pressures Felicity for help, who has started having hallucinations of her hacker past self. Shadowspire infiltrates A.R.G.U.S. looking for the access codes to a project known as "Rubicon", killing Waller when she refuses to help. Oliver and the team, with Felicity's assistance, enter A.R.G.U.S. and stop Shadowspire. Oliver vows to look for a way to cure Felicity's paralysis; and John takes Andy to his house. In flashbacks, Reiter is revealed as the leader of Shadowspire.

12. Unchained

The team goes after a burglar and Oliver and Thea manage to corner him. He escapes when Thea loses consciousness. Malcolm reveals to Oliver that since she has not taken a life, the bloodlust is killing her. Oliver finds out that the burglar is Roy Harper. They free Roy from the control of a man who goes by the name Calculator. Felicity tracks the Calculator through the web, who reveals he intends to shut down the entire city, killing everyone in the process. The team manages to stop the plan. Meanwhile, Ruvé enters the mayoral race. Thea slips into a coma. The Calculator is revealed to be Felicity's father, Noah Kuttler. Roy decides to leave again. Nyssa escapes her cell in Nanda Parbat, visits Tatsu Yamashiro and convinces her to give her the Lotus, a cure for Thea's bloodlust. She demands Oliver to kill Malcolm in exchange for Lotus. In flashbacks, Reiter tortures Oliver for information on the maps he acquired. Oliver has a mystical meeting with the soul of Shado, who gives him a special stone. He reveals to Taiana that he killed her brother.

13. Sins of the Father

Oliver refuses Nyssa's offer; instead, he manages to convince Malcolm to relinquish control of the League to Nyssa in exchange for the Lotus. At the exchange, Malcolm double-crosses Nyssa and a war starts between the two assassin factions in Star City. Oliver convinces Malcolm to challenge Nyssa to a duel. Oliver uses ancient rules to trade places with Nyssa as her husband. Oliver defeats Malcolm but, instead of killing him, severs the hand wearing the Demon's Head ring and exchanges the ring for the Lotus. Nyssa disbands the League and destroys the ring. Malcolm informs Darhk about Oliver's son, William. Meanwhile, Noah reveals to Felicity that he is the Calculator, claiming to have changed into a good person. She finds out that he is lying and turns him over to the police. In flashbacks, Taiana takes the stone from Oliver and gives it to Reiter, demanding her freedom, which Reiter refuses to do and tasks her to help Oliver recover. She later reconciles with him. Reiter informs Oliver that the stone led to the location of what he seeks; and they are going to "dig".

14. Code of Silence

Malcolm joins Darhk, Ruvé, and the other leaders of H.I.V.E. and it is revealed that they are moving on to "Phase 5" of their plan. Darhk sends a group of mercenaries, known as the Demolition Team, to take out Quentin, whom Laurel saves. With Curtis' help, Felicity realizes that the Demolition Team is planning to destroy the building of the mayoral debate between Oliver and Ruvé, leaving her alive as a sympathetic survivor. Oliver and his team stop the mercenaries in time for Oliver to win the debate. Oliver and Felicity become engaged and Curtis gives her a device that can cure her paralysis. Darhk kidnaps William. Meanwhile, Thea finds out about William and supports Oliver's decision to hide it from Felicity. Quentin tells Donna about his previous involvement with Darhk. In flashbacks, in order to gain the approval of the prisoners, Oliver kills Conklin, who reveals that Reiter plans to kill all the prisoners after he finds his "ultimate power".

15. Taken

Darhk demands Oliver withdraw from the mayoral race in exchange for William. Oliver reveals the truth about William to the rest of the team while revealing his alter ego to Samantha. He asks a Detroit-based vigilante named Mari McCabe for help, as her powers are derived from magic. Mari tracks William's location; but they fail to rescue him. Oliver withdraws from the race while the team discovers the root of Darhk's powers and sets a plan to destroy his mystical idol. The plan works; Darhk is left powerless and arrested, while William is saved. They also discover that Malcolm was the one who kidnapped William. Later, Oliver sends William and his mother away for safety, planning to reveal the truth to William when he is 18. Felicity decides to break up with Oliver while she recovers her ability to walk. In flashbacks, a passage is discovered that leads to Reiter's "ultimate power" and the spell on Oliver's stomach allows him to pass unharmed.

16. Broken Hearts

Carrie Cutter returns to Star City and begins targeting high profile couples. While the team works to track her whereabouts and prevent any more killings, Laurel works on Darhk's prosecution. After several failed attempts to find a suitable witness, Quentin testifies to his involvement. The team discovers that Carrie is targeting couples that have recently been married. In order to draw her out, Oliver convinces Felicity to stage a "secret" wedding with him to set themselves up as targets, intentionally leaking the information to the media. The plan works and Carrie attacks Oliver and Felicity at the ceremony. Felicity distracts her long enough for Diggle and Thea to apprehend her. Darhk's bail is denied and is remanded into custody. Quentin is suspended pending an investigation, while Felicity quits the team for good. In custody, Darhk is shown wearing a mystical ring he secretly carried inside. In flashbacks, Oliver leads Reiter to a mystical idol, but steals it and runs off into the tunnels with Taiana. The pair incapacitate two mercenaries and acquire their guns.

17. Beacon of Hope

Brie Larvan orchestrates her release from prison and travels to Star City in search of the bio-mechanical chip that helps Felicity walk. Brie attacks Palmer Tech, holding the board hostage until Felicity turns herself over. Curtis tracks down Oliver's hideout, discovering his secret in the process, so that he can offer his help to the team to save Felicity, Donna, and Thea. Oliver is stung by one of Brie's robotic bees. Curtis realizes the sting actually implanted a bee within Oliver that is replicating itself. Laurel uses her Canary Cry to save Oliver. Felicity is able to evacuate the board members, while Brie reveals she is after the chip because she has a tumor that is going to leave her paralyzed. Curtis develops a virus to shut down the bees and uses them to stop Brie. Meanwhile, Malcolm visits Darhk and informs him that H.I.V.E. is proceeding with "Genesis" without Darhk, who later gains the loyalty of Michael Amar. Andy is revealed to be still in allegiance with Darhk. In flashbacks, Oliver engages Reiter, whose powers from the idol dwindle; and Reiter escapes into the tunnels to recover it. Oliver and Taiana decide to save the prisoners instead.

18. Eleven-Fifty-Nine

Andy tells John that he was approached by Malcolm about a plan to break Darhk out of prison. Oliver and John foil H.I.V.E.'s plan, but it turns out to be a ruse designed to let Malcolm and his loyal assassins invade the bunker and steal Darhk's idol. Malcolm delivers the idol to Darhk, who finds out that it is incomplete. John reveals to Andy that he personally hid the missing piece in another location. Oliver becomes suspicious of Andy. Darhk and Amar orchestrate a prison riot and the team sets out to stop him with Andy joining them. However, when the team reaches Darhk, Andy turns on them and gives Darhk the missing piece to his idol. With his powers restored, Darhk subdues the team and stabs Laurel before escaping with Malcolm, Andy, and tens of other inmates. Laurel later dies at the hospital. In flashbacks, Oliver and Taiana help the prisoners escape and set off a bomb to bury Reiter in the tunnels. Reiter kills his two accompanying mercenaries in order to survive by the idol.

19. Canary Cry

As the team, including the rejoined Felicity, mourns Laurel's death and tries to determine their next move against Darhk, another woman posing as the Black Canary appears in Star City. She turns out to be Evelyn Sharp, the daughter of H.I.V.E. prisoners who were left behind after Oliver saved his team when they were previously kidnapped by Darhk. John, angry at being betrayed by Andy, goes after Ruvé, the new mayor; but Oliver intervenes. Ruvé issues arrest warrants for all vigilantes. Sharp goes after Ruvé publicly, but the Green Arrow is able to dissuade her from killing Ruvé. Meanwhile, Quentin starts looking for ways to revive Laurel; but Oliver manages to dissuade him. At Laurel's funeral, Oliver reveals her as the Black Canary to preserve her image with the city. Afterwards, Oliver vows to find a way to defeat and kill Darhk. In flashbacks, Oliver and Laurel struggle to come to terms with Tommy Merlyn 's death. In the end, Oliver leaves Laurel to cope on her own and returns to Lian Yu.

20. Genesis

Darhk returns to H.I.V.E. and kills two of the board members before renewing his plans for "Genesis". Oliver and Felicity go to Hub City and meet an immortal shaman, Esrin Fortuna, who starts educating Oliver about dark magic. After a mystical ritual, Fortuna tells Oliver that the darkness inside him is too strong to channel the light. In Star City, John locates Andy, but is captured after a brief shootout. Andy places a tracking device on him, then allows John to escape so that Darhk and his team can go after John and Lyla and steal "Rubicon", the key to the world's nuclear weapons. Oliver manages to stop Darhk by channeling the power of light, nullifying Darhk's powers and forcing him to retreat. John kills Andy. Meanwhile, Thea and Alex, who is working for Ruvé now, go to an unknown city for vacation. She soon realizes that the city is atypical and finds out that Alex is using Darhk's mind control pills. She is subdued by Darhk's operatives and the city is revealed to be under Star City. The team realizes that Darhk plans to detonate nuclear weapons and build a new world over the ashes.

21. Monument Point

Darhk begins taking control of the world's nuclear missiles. The team seeks out Noah to help disable Rubicon. Darhk sends Danny Brickwell and Amar to find and kill Noah, but Oliver and his team are able to rescue him. Noah agrees to help, but it requires a high-powered processor from Palmer Tech. Felicity learns she has been fired as CEO and is unable to get the processor, forcing the team to break in and steal it. H.I.V.E. locates the team when Noah hacks into Rubicon. As H.I.V.E. attacks, Felicity and Noah shut down Rubicon and stop all the missiles but one, which launches and heads to Monument Point. Felicity only manages to redirect it to Havenrock, reducing the casualties to tens of thousands. Oliver and Diggle find Darhk in the Star City nexus chamber, gathering more power from all the deaths caused by the explosion. Meanwhile, in the underground city, Malcolm tells Thea it is designed to protect Darhk and his chosen people from the nuclear apocalypse. Machin attacks the city and kills Alex. In flashbacks, Reiter escapes the cave-in, but Oliver and Taiana steal the idol back. The idol then begins to affect Taiana.

22. Lost in the Flood

Darhk's power has grown exponentially and he attempts to reactivate "Rubicon" with the help of Felicity's former boyfriend, Cooper Seldon, and launch the remaining missiles. However, Noah, Felicity, and Curtis successfully shut down "Rubicon" for good. Meanwhile, Oliver and Diggle discover the underground town and track Thea's whereabouts. Malcolm uses a mind-controlling drug on her which makes her turn on Oliver, but Oliver manages to talk her back to reality. Just then, Machin takes over H.I.V.E.'s command center and threatens to destroy Darhk's town. Oliver, Diggle, and Thea intercede, but the main power source gets ruptured and explodes, destroying the city. The town is evacuated and Machin escapes, but not before killing Ruvé. Donna convinces Noah to leave and never come back. Darhk decides to use "Rubicon" to destroy the whole Earth and shows up at Oliver's home, where Felicity, Donna, and Curtis are. In flashbacks, the idol begins to slowly corrupt Taiana, feeding her ever more power from each soldier she and Oliver kill. Oliver takes the idol and tries to talk her down, but Reiter suddenly arrives and confronts them both.

23. Schism

Darhk steals the laptop keeping him locked out of "Rubicon" and launches over 15,000 nuclear missiles, giving the team two hours to prevent worldwide annihilation. With Star City rioting, Oliver addresses everyone, inspiring hope in them to stay strong, while Felicity and Curtis divert the missile aimed at Star City. Oliver goes after Darhk, while Felicity, Merlyn, and Thea track down "Rubicon". Felicity convinces Cooper to stop helping Darhk, at the cost of his life. Curtis devises a means to stop the missiles. Oliver is able to nullify Darhk's powers with the hope he inspired throughout the city. While the citizens of Star City take on Darhk's remaining men, Oliver duels and kills Darhk. Afterward, Thea, Diggle and Lance, who gets fired from Star City Police Department (SCPD), leave the team for new lives, and the city council appoints Oliver as the interim mayor. In flashbacks, Oliver and Taiana manage to kill Reiter. She then convinces him to kill her when she is unable to escape the darkness within. Oliver radios Waller to rescue the rest of the prisoners and keep the idol safe, intending to go to Russia to meet Taiana's family as he promised.

Season 5

1. Legacy

Five months after the death of Damien Darhk, Oliver Queen is distracted from his new duties as mayor due to continuing as Green Arrow alone as his old team members having gone their separate ways. He is encouraged by Felicity Smoak to build a new team by recruiting the amateur vigilantes now working in Star City, like Rene Ramirez. A new criminal crew appears, headed by Tobias Church, and kidnaps Oliver in a bid to draw out and kill the Green Arrow, thereby taking over the city. He is rescued by Thea Queen, but she permanently quits the team after seeing that Oliver is again willing to kill. Church escapes from the Green Arrow and a team of several police officers, then later unites all the organized crime cartels and street gangs under his leadership. Oliver finally agrees to form a new team and includes Curtis Holt at his request. Elsewhere, a mysterious hooded figure in black kills a policeman in cold blood. In a flashback, Oliver encounters his old friend Anatoly Knyazev in Russia. Anatoly agrees to help him kill Konstantin Kovar, the tyrant running Taiana Venediktov 's village, by initiating him to the Bratva, the only group that can possibly defeat Kovar.

2. The Recruits

Green Arrow recruits Rene, Evelyn Sharp, and Curtis and begins training them using an exercise from his Bratva initiation, revealed through flashbacks. As mayor, Oliver arranges to have AmerTek provide free medical care for Star City's disenfranchised at a special clinic. A new metahuman, " Ragman ", appears and starts attacking AmerTek executives. The recruits leave Green Arrow because they do not trust him. Thea discovers that AmerTek CEO Janet Carroll is working with Church, and Felicity learns that it was AmerTek's nuclear missiles that Damien Darhk used to try and destroy the world. Ragman and Green Arrow stop an arms buy between Carroll and Church. Ragman later reveals that he was the only survivor of the Havenrock bombing. Green Arrow convinces him to put aside vengeance and join his team. Later, Oliver reveals his identity to the other recruits as a sign of trust and they agree to rejoin the team. Thea decides to appoint Quentin Lance as Deputy Mayor. Church is attacked by the mysterious archer who calls himself " Prometheus ", who wants to personally kill Green Arrow. Meanwhile, John Diggle, back in the Army and on a covert operation, is ambushed by his superior, who plans to sell a nuclear trigger and frame him.

3. A Matter of Trust

Green Arrow investigates a new drug, "Stardust", but still believes his team is not ready for the streets. While he is being informed about Prometheus, Rene and Evelyn secretly raid Stardust dealer Derek Sampson 's warehouse. The raid goes wrong and Sampson ends up with superhuman strength and an inability to feel pain. Oliver learns what happened from District Attorney Adrian Chase, convincing him that he still cannot trust his recruits. Felicity advises him to accept the recruits as they are and Green Arrow finally uses his new team to stop Sampson from creating more superhumans. Oliver also publicly endorses Thea's decision to appoint Quentin as Deputy Mayor after negative news stories almost cause her to resign. Felicity admits to Rory Regan (Ragman) that she was the one responsible for Havenrock. Diggle is incarcerated and hallucinates Floyd Lawton as his cellmate due to guilt over killing his brother, Andy. Afterward, he tells Lyla Michaels that he will not fight the charges against him, so she asks Oliver to help her break Diggle out of prison. Flashbacks focus on Anatoly teaching Oliver the need to trust his brothers in the Bratva.

4. Penance

Oliver's team captures an associate of Church's and delivers him and his loot to the Star City Police Department (SCPD). Afterward, Rory formally leaves the team, saying that he cannot work with Felicity. Oliver leaves Star City to help Lyla break Diggle out of prison over Felicity and the team's objections. Quentin and Chase personally deliver the evidence to the SCPD, which turns out to be a disguised bomb. The explosion allows Church's group to break in and steal weapons from evidence. Oliver infiltrates a federal prison and locates Diggle, who agrees to escape to safeguard Oliver. Oliver takes him and Lyla to a H.I.V.E. safe house. Felicity attempts to reconcile matters with Rory. She and the team determine that Church is planning an assault on the SCPD's anti-crime unit, where Chase is interrogating Church's man. Rory rejoins the team and they help everyone inside escape the attack. However, Curtis is injured and Church captures Rene, intending to torture him to death. Oliver returns and vows to rescue Rene, while Chase decides to trust the vigilantes' motives. In flashbacks, Anatoly tasks Oliver with gaining information from, and then killing, an associate of Kovar. Oliver completes the assignment and Anatoly welcomes him into the Bratva.

5. Human Target

Oliver rescues Rene, who tells him that he gave up Green Arrow's true identity to Church. Church plans to kill Oliver as the Mayor instead of as the vigilante. Diggle rejoins the team and suggests that bodyguard Christopher Chance, the "Human Target", could be able to help them. Christopher impersonates Oliver at City Hall and fakes the Mayor's death when Church's mercenary attacks. The team realizes that Church plans to consolidate the drug traffic of five cities through Star City, needing Green Arrow eliminated for his plan to succeed. Oliver and his team, joined by Diggle and Christopher, raid Church's meeting and capture him along with several other crime lords. Oliver publicly claims that his faked death was part of a sting operation. Prometheus kills Church during transport, despite Church telling him Green Arrow's identity. Television reporter Susan Williams obtains evidence that Oliver was in Russia during the time he was supposedly stranded on Lian Yu. Meanwhile, Oliver finds out that Felicity is dating Billy Malone, a police detective recently assigned to the anti-crime unit. In flashbacks, Oliver is ambushed by other Bratva members. However, the men are killed by Christopher, whom Anatoly had hired to protect Oliver.

6. So It Begins

Oliver, Diggle, and Felicity privately track Prometheus, who starts killing seemingly random civilians with throwing stars. A news report on the killings causes tension in the city and angers the recruits, since they were not informed. Felicity steals one of the stars from Billy to examine it. A pattern between the victims relates to Oliver's list from when he first started out as the Hood. This further angers the recruits, Evelyn most of all, as they did not know about Oliver's "kill list" from when he initially returned. Felicity uses the pattern to predict future victims and the team splits up. Evelyn encounters Prometheus and engages him, managing to cut his arm before being overpowered. Oliver then arrives, but Prometheus escapes. Meanwhile, Thea discovers that Quentin never quit drinking. Evelyn reconciles with Oliver, and Felicity tells Billy that she works with the Green Arrow, which intrigues him. She later tells Oliver that evidence she has discovered suggests that Prometheus could be an SCPD officer; Quentin is shown waking from an alcohol-induced sleep with a slash across his arm and a throwing star in his possession. In flashbacks, during a Bratva operation, Oliver is abducted by Kovar's men and taken to him.

7. Vigilante

A new vigilante appears in Star City, one who kills criminals in cold blood. Quentin tenders his resignation as Deputy Mayor. He later tells Thea about the throwing star and his drunken blackouts, but believes he is being set up. The team intercepts the Vigilante during a bank robbery, but he gets away, as does Eric Dunn, the head of the robbers. District Attorney Chase forces one of the other robbers to reveal Dunn's location and Green Arrow saves him from the Vigilante. Thea convinces Quentin to go into rehabilitation, while Oliver and Susan start getting closer. The team poses as bank robbers to lure out the Vigilante, who again escapes even after Oliver defeats and nearly unmasks him. Thea tells Oliver about Quentin and the possibility of him being framed; they deduce that Prometheus must know Green Arrow's identity. Evelyn is revealed to be working for Prometheus. In flashbacks, Kovar introduces Oliver to his servant Galina Venediktov, Taiana's mother. He also claims that the Bratva have only been using Oliver for their own ends, including making a deal with him. Kovar then releases Oliver back to the Bratva.

8. Invasion!

Oliver finds himself back at Queen Manor; both his parents are alive, he is about to be married to Laurel Lance, and Diggle is The Hood. However, it is revealed that he, Diggle, Thea, Sara Lance, and Ray Palmer are all being held unconscious inside pods aboard the Dominator mothership. Meanwhile, Felicity, Curtis, and Cisco Ramon try to hack into the Dominators' mainframe using a piece of their technology. The team recovers a necessary device with the help of the Flash and Supergirl and manages to locate the others. Oliver begins seeing flashes of his former life, as do Sara and Ray. All five captives soon realize that they are inside a shared hallucination of simulated reality. Their escape attempt is blocked by manifestations of Malcolm Merlyn, Deathstroke, Damien Darhk, and their mercenaries. The group defeats all of them, then leaves the dream and awakens inside the ship. Escaping in a shuttle, they are rescued by the Waverider. Ray deduces that the Dominators were gathering information from their minds to help them complete a special "weapon", using the hallucination as a distraction. The team learns that the Dominator mothership is headed toward Earth. Note: This episode continues a crossover event that begins on The Flash season 3 episode 8 and concludes on Legends of Tomorrow season 2 episode 7.

9. What We Leave Behind

Prometheus obtains further intel about the team from Evelyn. He then attacks and hospitalizes Curtis, injecting him with a tuberculosis vaccine developed by Justin Claybourne, a corrupt pharmaceutical manufacturer named on Oliver's former kill list. Flashbacks show that Oliver killed Claybourne after discovering that he financed a tuberculosis epidemic, then raised the price on his drug to boost his company's profits. When the team tracks down Prometheus, Evelyn reveals her true allegiance and escapes with Prometheus. Investigating Prometheus on his own, Billy sends information he discovers to Felicity just before the villain captures him. The information turns out to be about Claybourne's illegitimate son, who may now be seeking retribution. Oliver deduces that Prometheus is at the former office building of the corporation that created the epidemic and goes there alone. He finds that Prometheus has staged it to resemble Oliver's prior attack. Oliver kills Prometheus, only to discover he has actually killed a gagged Billy, whom the real Prometheus set up as himself to trick Oliver. Curtis' husband, Paul, leaves him after discovering Curtis is a vigilante; Felicity mourns Billy's death; Diggle is recaptured; Oliver encounters an apparently alive Laurel Lance inside the lair.

10. Who Are You?

Oliver welcomes the seemingly-revived Laurel into the team, but it becomes clear that she is Laurel's Earth-2 doppelganger Black Siren, having been broken out of S.T.A.R. Labs by Prometheus. Laurel escapes and calls Oliver for a meeting, which ends in her capture. Learning about Paul, Rene convinces Curtis to focus on his capabilities, not his flaws. Oliver places Laurel in an A.R.G.U.S. facility, hoping to change her one day. Oliver reveals his plans to follow their Laurel's dying wish, to find a new Black Canary. In Hub City, a woman with a sonic scream stops an attempted assault in a bar. Meanwhile, Oliver convinces Chase to represent John whose corrupt superior, General Walker, arrives to transfer him into custody. However, Chase manages to keep John in his jurisdiction. In flashbacks, Gregor, the Bratva traitor, attempts to force Oliver's obedience, but Oliver is rescued by a female archer named Talia.

11. Second Chances

During the S.T.A.R. Labs incident, Central City Police Department (CCPD) undercover officer Tina Boland develops a sonic scream after watching her partner die at the hands of drug dealer Sean Sonus. In the present day, Chase tells Oliver that the NSA had been investigating Walker, but its file has disappeared. While Felicity tries to locate it, Oliver takes Rene and Curtis to Hub City to recruit Tina. She initially refuses to join, but the team intercepts her attacking Sonus, who is also a metahuman with sonic powers. Sonus escapes and Oliver reveals his identity to convince Tina to let him help her. Oliver's team helps her defeat the dealers during a shipment, but Oliver fails to dissuade her from killing Sonus. Meanwhile, Felicity meets with a hacktivist whom she inspired during her college days and receives the file against Walker along with a cache of other secret information. With the file, Chase manages to get John released. Tina meets Oliver and agrees to join the team, revealing that her real name is Dinah Drake. In flashbacks, Talia helps Oliver kill an important associate of Kovar's. She also urges Oliver to become the avenger his father wanted him to be for Starling City.

12. Bratva

In flashbacks, Oliver and Talia kill a drug merchant from Robert Queen 's list. Talia presses Oliver to return home, but he chooses to help Anatoly kill Gregor. In the present, the team learns that Walker is in Russia for a deal with Markovian terrorists. Oliver takes everyone except Rene, who is helping Quentin prepare for an interview with Susan. Anatoly refuses to help Oliver unless he does something criminal in return, which Oliver refuses. After Felicity blackmails a Russian analyst, the team captures Walker's henchman, whom John tortures to no avail. To prevent John and Felicity from acting against their morals, Oliver and Dinah accept Anatoly's terms and attack a rival. The team and the Bratva intercept Walker's deal. John decides to spare Walker, who is arrested by the US military police, while Rory uses his rags to contain the nuclear blast of Walker's failsafe bomb. Upon returning, Oliver sleeps with Susan, who later deduces his alter-ego after learning about a similar hooded vigilante who was in Russia five years ago. Rory tells Felicity that his rags do not function anymore and that he needs to leave temporarily. Meanwhile, with Rene's help, Quentin's interview is successful and they become friends.

13. Spectre of the Gun

Sixteen months prior, Rene watched as his wife, an addict, was killed by a dealer in front of their daughter, Zoe, who was subsequently transferred to foster care, barring Rene from seeing her. He was inspired by the Green Arrow killing Darhk and saving Star City and decided to start his vigilantism. In the present, Rene now works for Quentin as his assistant. An armed man attacks city hall, killing seven staff members and wounding several others. Felicity identifies the shooter as James Edlund, a former clerk and a proponent of gun control who lost his family in a shootout months prior. Thea and Quentin encourage Oliver to deal with the situation as the mayor, not the vigilante. Oliver decides to work with the city council towards a gun control act. Rene and Curtis locate Edlund's hideout and find his next target, where Oliver confronts Edlund as the mayor and dissuades him from killing anyone, convincing him to surrender. Oliver reaches an agreement with the council with Rene's help. Curtis promises to help Rene get Zoe back legally. Meanwhile, John convinces Dinah to return to a normal life, and she enlists in the SCPD.

14. The Sin-Eater

Oliver meets Prometheus' alleged mother, but she refuses to help him. During a prison transfer, Chien Na Wei, Carrie Cutter, and Liza Warner kill the guards and escape. Oliver appoints Dinah as an SCPD officer. Frank Pike receives evidence that the Green Arrow killed Malone and orders a manhunt. Oliver and Quentin track down the trio, but they escape due to the intervention of the Anti-Crime Unit (ACU). Oliver surmises that Prometheus is responsible for sending the evidence. Oliver denies being the Green Arrow to Susan. Thea discredits her by having Felicity hack Susan's files and insert proof that she committed plagiarism. Susan gets angry with Oliver, who then confronts Thea. He reveals the circumstances surrounding Malone's death to Pike. The team intercepts the trio stealing money from a stash left by Church, but are ambushed by their mercenaries. The ACU arrives and arrests the trio, allowing the team to leave. Quentin gives Dinah his blessing to assume the Black Canary identity. Word of the cover-up is later leaked to the media and the allegations are serious enough that impeachment is on the table. In flashbacks, Oliver and Anatoly engage Gregor and his men. Gregor prepares to kill Anatoly.

15. Fighting Fire with Fire

Oliver's impeachment process begins, with Chase serving as his attorney. The Vigilante starts targeting the former, but is opposed by Prometheus, who is revealed to be Chase. Using Pandora, Felicity and Thea learn about a secret that can be used to blackmail an alderman. Oliver and John dissuade them from using it. Using a piece of the Vigilante's visor, Curtis manages to track him down to where he plans to assassinate Oliver. To give himself a fighting chance to remain mayor, Oliver publicly disavows the Green Arrow as a "cop killer", stating his motive for the cover-up was to protect the people from losing hope. The Vigilante escapes. The council votes against impeachment, but Thea resigns from Oliver's administration in order to work on her morality. Paul decides to divorce Curtis. Susan gets her job back due to Felicity's anonymous testimony. Felicity then secretly joins Helix. Chase aggressively demands that Susan listen to his story. In flashbacks, Anatoly demands "spross dopross", the process by which the Pakhan may be overthrown. Oliver infiltrates Kovar's mansion and acquires evidence that Gregor has been embezzling the Bratva's money. The majority of the captains vote for Anatoly, but Gregor starts a mutiny.

16. Checkmate

Oliver meets Talia, who reveals herself to be Ra's al Ghul 's daughter. She tells Oliver that she hates him for killing her father, so she helped Chase become Prometheus. Oliver confronts Chase, who says that he has kidnapped Williams and she will starve if Oliver kills him. The Green Arrow breaks into Chase's house and tries to reason with Chase's wife, Doris, until the ACU storms in, forcing him to escape. Felicity agrees to hack Department of Homeland Security drones for Helix in exchange for assistance in finding Williams' location. Oliver's team enters the building, finding and rescuing Williams before Oliver confronts Chase. Diggle brings Doris to try and convince Chase to surrender, only for him to mortally stab her. Oliver engages Chase while the others take Williams and Doris away. Talia arrives and helps Chase overpower and abduct Oliver. Chase tells Oliver that he plans to help Oliver learn who he really is. Meanwhile, Chase continues acting normally at City Hall, angering the team. In flashbacks, most of the Bratva captains are killed in the shootout before Gregor escapes. Oliver and Anatoly attack Gregor during a meeting with his loyal followers and subdue him.

17. Kapiushon

In flashbacks, Anatoly becomes the new Pakhan. Kovar buys sarin gas from Malcolm. Anatoly learns that Kovar is planning a coup against the Russian government. By torturing an operative of Kovar, Oliver learns that Kovar has invited key government officials to his casino, where he plans to assassinate all of them by the gas. Oliver convinces Galina, the mother of Taiana and Vlad Venediktov, to give him her key card to the casino. Oliver and the Bratva infiltrate the casino, where Kovar learns about Galina's betrayal and kills her, angering Oliver, who fails to stop the spread of the gas in time, leading to Viktor 's death. Anatoly fails to persuade Oliver from killing Kovar. The former appoints him as a Bratva captain. Malcolm helps Kovar's operatives revive him. In the present, Chase tortures Oliver to make him confess a "secret". The former brings a seemingly reluctant Evelyn, apparently killing her after Oliver refuses to do it. Oliver reveals that he killed people because he liked it, which Chase wanted to hear. Evelyn is revealed to be alive and still assisting Chase. Chase lets Oliver go, and he returns to the hideout and tells the team about his decision to end his vigilantism.

18. Disbanded

With Chase having broken him, Oliver disbands the team and calls in the Bratva to take out Chase. Diggle tries to talk Oliver out of it, reminding him that there are better ways of doing things. Felicity goes to Helix and manages to find pixelated footage of Chase taking off his Prometheus mask. Oliver allows the Bratva to steal diabetes medicine as a down-payment, but they are stopped by the team. Diggle tells Oliver that they can fix him if he is willing to accept help. Oliver rejoins the team, taking out the Bratva and saving hostages that Anatoly had taken as leverage. Felicity and Curtis manage to decode Chase's pixelation device, revealing Prometheus' identity to the police. Oliver claims he's not ready to put the hood back on yet but, with his team, it will be sooner rather than later. When Chase's guards try to arrest him, he kills them and leaves his safe house. In flashbacks, Oliver wants to return to Lian Yu, so Anatoly plans one last heist to help sick children, hoping to convince Oliver to stay, but Oliver still intends to return to Lian Yu in order to stage his dramatic return to Starling City.

19. Dangerous Liaisons

With law enforcement agencies unable to locate Chase, Felicity agrees to Alena's plan to free former Helix leader Cayden James, who created a biometric tracker that can find anyone, but is currently in A.R.G.U.S. custody without due process. Lyla plans to use James as bait to destroy Helix, but Alena, having already anticipated that, finds James' true location and leads her team, including Felicity, to the rescue. They are interrupted by the team, but Felicity forces them to allow Helix to escape with James. Helix ends their connection with Felicity, but provides her with James' scanner, which she uses to learn that Chase is already in the team's hideout, starting an assault. Meanwhile, Quentin confronts Rene for not visiting Zoe, though legally possible. Rene believes himself to be an unsuitable father. However, Quentin organizes a visit, making Rene decide to fight to regain custody of Zoe. John confronts Lyla for her moral ambiguity which led to their divorce previously.

20. Underneath

Chase triggers an EMP within the team hideout, deactivating all the equipment, stranding Oliver and Felicity, and rendering her paralyzed. Curtis learns about the attack, informing Rene and Dinah. Diggle and Lyla agree to put their problems aside when they hear about Oliver and Felicity. The team soon realizes that, after a period of time, a backup generator will activate, igniting the methane gas currently leaking into the base. Oliver is injured trying to find a way out. Eventually, Diggle is lowered down an access shaft with the others' help and manages to pull up both Oliver and Felicity. The team takes refuge at A.R.G.U.S., where Diggle and Lyla reconcile. Later, Chase is revealed to have tracked down Oliver's son, William. In flashbacks to the period after Damien's death, Oliver, Felicity, and Curtis continue working together. Curtis arranges to have Oliver and Felicity spend time together, leading to their having sex in the lair, but she decides that she is not ready to get back together with Oliver, who accepts it.

21. Honor Thy Fathers

Not to be confused with the season 1 episode " Honor Thy Father ". Chase's prosecutions are discredited and most of the convicts, including Sampson, are released on bail. Oliver is sent a body, identified as Henry Goodwin. While Curtis and Dinah track Sampson, the others investigate Goodwin, who is revealed to have been killed by Robert Queen, shocking Thea and Oliver. The team deduces that Chase and Sampson are working together to release Claybourne's weaponized tuberculosis in Star City. With Oliver wearing the Green Arrow costume again, they track the bomb and engage Sampson's party while Oliver duels Chase. Sampson is captured as Curtis defuses the bomb. Oliver reveals that Claybourne planned to disown Chase due to Chase's mental condition. Disillusioned, Chase asks Oliver to kill him, but Oliver arrests him instead. Oliver gives Thea a video of Robert asking her to look after Oliver. Meanwhile, Rene refuses to testify in court so as not to upset Zoe, leading to the judge dismissing his claim. In flashbacks, Oliver and Anatoly return to Lian Yu, where they arrange for Oliver's return to Starling City. Anatoly leaves to bribe the boatmen to sail towards the island, but Oliver gets captured by Kovar, who knows about Oliver's plan.

22. Missing

The team holds a birthday party for Oliver, but Rene, Dinah, and Curtis are later kidnapped by Chase's outside team. Realizing that Chase is picking them off after Thea and Quentin are kidnapped by Black Siren and Evelyn, Oliver accepts Malcolm's aid to help him lean on Chase. However, Chase reveals he has kidnapped William and Oliver is forced to free him. Felicity and Diggle are kidnapped by Talia and her followers, while Oliver recruits Nyssa al Ghul to help him fight Chase's army. Tracking a plane carrying Chase, they realize they are going to Lian Yu. Arriving on the island, Oliver visits Slade and asks for his help. In flashbacks, Kovar injects a drug into Oliver that forces him to suffer visceral hallucinations of painful moments from the last five years. After enduring visions of Yao Fei and Laurel, Oliver eventually finds the strength to escape.

23. Lian Yu

Oliver recruits a Mirakuru-less and hate-free Slade Wilson. Harkness is also recruited, but he quickly defects to Chase. Oliver's group frees Felicity, Thea, Curtis, and Samantha Clayton and traps Evelyn. Oliver asks Malcolm to take Felicity's group to Chase's plane in order to escape and manages to free John, Rene, Dinah, and Quentin, who knocks Black Siren unconscious while Nyssa defeats Talia. Malcolm kills Harkness, but sacrifices himself by taking Thea's place on a tripped landmine, allowing Felicity's group to escape. They reach the plane, but learn that the whole island is rigged with C-4 explosives, which will detonate if Chase dies. Oliver asks John to lead the others to Felicity's group and escape while Oliver captures Chase on a boat and frees William, who learns that his father is the Green Arrow. The plane is sabotaged, so Oliver tells the others to run to a ship on the opposite side of the island. Chase kills himself in front of Oliver and William, causing the bombs to demolish Lian Yu and leaving them unsure of the others' fates. In flashbacks, Oliver kills Kovar and his men, reaches the boat in time and calls his mother, Moira, on his way home.

Season 6

1. Fallout

In flashbacks to island five months previous, Slade Wilson heads to the A.R.G.U.S. ship alone while the others take refuge in the plane. Samantha Clayton runs off to find her son, William, and Thea follows. Diggle's injured while rescuing Felicity. Following the explosion, Oliver finds Thea in critical condition. A dying Samantha asks him to look after William. Dinah Drake and Quentin Lance are attacked by Black Siren, whom he shoots. She is saved by an unknown man. In the present, Thea is still comatose and William blames Oliver for his mother's death. Black Siren and her mercenary team attack the Star City Police Department (SCPD) station. During another confrontation, John's hesitation gets Rene injured. Black Siren catches Team Arrow off guard by attacking the hideout before being driven off. Quentin's reluctance to harm Black Siren, his dead daughter's doppelgänger, allows her escape. Oliver arranges another hearing for Rene to reclaim his daughter. Curtis discovers that Black Siren stole a prototype T-sphere. Slade leaves to find his son, advising Oliver to choose between vigilantism and William. Oliver and William reconcile. Pictures of Oliver wearing the Green Arrow suit leak to the media.

2. Tribute

Oliver publicly denies being the Green Arrow, facing an investigation by FBI agent Samanda Watson along with William's concerns of losing him. Anatoly Knyazev and his men kidnap a group of Markovian delegates, demanding a ransom. Believing Anatoly leaked the photo, Felicity and Curtis work on discrediting it while tracking the hostages, three of whom Team Arrow saves while Anatoly escapes with one. Anatoly tells Oliver that he needs to convince the Bratva that he is no longer friends with Oliver and is not weak, injecting the hostage with a toxin which will kill him soon. Detecting the toxin and acquiring the antidote, Oliver injects it into the hostage, but Anatoly kills him anyway. He escapes after telling Oliver that he did not leak the photo. The media acquires evidence from an "anonymous source" that it was faked, but Watson tells Oliver that she will continue her investigation. As John prepares to tell Oliver about his degenerative nerve damage, Oliver convinces him to wear the Green Arrow mantle, deciding to choose William over vigilantism.

3. Next of Kin

Team Arrow arrests the terrorist Alex Faust, with John refusing to shoot arrows. The City Council begins drafting a tighter anti-vigilante bill. Telling Dinah that he has overcome his tremors, John is revealed to have leadership problems when rogue CIA operatives begin hunting down a former member in order to silence him. Rene asks Oliver to return to the team. Oliver has Felicity help William with his mathematics test while convincing John of his competence. Team Arrow tracks down a rogue group of mercenaries led by Onyx Adams to a hotel and engages them, defeating them all and saving the civilians from a biological weapon. With no way to stop the bill, Oliver converts it to a city-wide referendum. Watson begins suspecting John being the Green Arrow. John meanwhile receives an arrow-firing crossbow invented by Felicity and Curtis. Oliver resumes his relationship with her while John is revealed to be injecting drugs to control his tremors.

4. Reversal

Black Siren begins killing seemingly unimportant individuals while Felicity is approached by Alena, who tells her that Cayden James is planning to cause hundreds of millions of casualties worldwide. They meet black market dealer "Amnesiac" to buy a "ghost drive". Feeling concerned, Oliver intervenes and attacks the thugs, angering Felicity, who steals the drive. Team Arrow tracks down Black Siren to the Helix facility and discovers she is working for James, who tasks his men to kill Felicity and Alena, who is critically shot during the rescue by Team Arrow. Felicity learns that James has stolen the victims' fingerprints, necessary to enter the International Domain Name Directory (IDND), a global internet infrastructure hub. Believing that James intends to destroy the internet, Team Arrow attacks his party at the IDND, where Felicity manages to breach through the firewall to stop James' apparent attack. Felicity adds Alena to her startup, calling it Helix and intending to mass produce her spinal implant. James is revealed to have intentionally lured Felicity into breaking the firewall so that he can have secret access and covered tracks. He provides Black Siren with a device to stop Curtis' trackers. Slade calls Oliver and asks for his help.

5. Deathstroke Returns

Slade asks Oliver to help him find his son Joe, who is being held in jail. The two meet up in Kasnia with an old acquaintance of Slade's, Nylander, who provides them with the information they need. Oliver and Slade are told that Joe was killed in prison, but later learn that he has apparently been kidnapped by a gang called the Jackals. Slade abandons Oliver, dons the Deathstroke outfit and attacks the Jackals' base, before being confronted by Joe, revealed as the leader of the Jackals. Meanwhile, Dinah protects an anti-vigilante bill-supporting politician from the Vigilante, eventually discovering that he is actually her old partner Vincent Sobel, thought long dead. Vincent survived and was given regeneration powers by the particle accelerator, but did not approach Dinah earlier because he had lost faith in their police work. In flashbacks, Slade spends time with his son Joe camping in the forests of New Zealand. The trip is later revealed as a cover for a mission, where Slade kills a Chinese agent in an attempt to locate Yao Fei.

6. Promises Kept

Slade tries to persuade Joe to leave with him, but he refuses, claiming that he saw his father kill the Chinese agent before he was influenced by Mirakuru. Slade tries to explain that it was a paid hit, but Joe refuses to forgive him, stating that learning who his father truly was led him down this path. Joe and Slade end up fighting until Oliver steps in, after which Joe escapes but not before revealing the existence of his brother, Grant. Slade tells Oliver he will continue to try and find both of his sons, but advises Oliver that he go back to his, not wanting Oliver to make the same mistakes he made. Meanwhile, Team Arrow fights against a new criminal group, led by Ricardo Diaz, who attempt to steal a valuable technology. The team eventually finds out about John's tremors, leading John to apologize to everyone. Curtis offers to help John the same way he helped Felicity when she was injured. John asks to have the night to think it over. Slade's flashbacks focus on his rise as Deathstroke and his relationship with his adolescent son Joe in ASIS.

7. Thanksgiving

Oliver, Felicity, William, and Quentin organize a Thanksgiving food drive to raise money for a new SCPD precinct. Oliver is promptly arrested by Watson under charges of vigilantism for being the Green Arrow. James and Black Siren subsequently get back to causing chaos since the Green Arrow is caught. Oliver's trial is delayed and he is released on bail. When John gets injured in the field, Oliver suits up as the Green Arrow once again, helping the team try to stop a bomb planted by James and Black Siren at the stadium during a Billy Joel concert. They subsequently discover the bomb is fake and that the cops guarding the stadium are not cops; they are swiftly taken out by Dinah, Curtis, and Rene, but James and Black Siren escape. Oliver visits John in the hospital and states he will wear the hood until John has recovered, whereupon he can reclaim it. Thea wakes from her coma and has Thanksgiving dinner with Oliver, Felicity, John, and William.

8. Crisis on Earth-X, Part 2

In S.T.A.R. Labs, a captured inter-dimensional villain from Earth-X, Prometheus, is revealed to be a parallel universe doppelgänger of Tommy Merlyn. After he cruelly taunts Oliver over his attachment to Earth-1's Tommy, Prometheus commits suicide out of loyalty to Earth-X's Nazi regime. Prometheus's partners, Dark Arrow (Oliver's doppelgänger), Overgirl ( Kara Danvers ' doppelgänger), and Eobard Thawne steal a sublight generator, the Prism, from research company Dayton Optical Systems; Oliver, Barry Allen, Kara, and the others believe that Dark Arrow seeks to build a neutron bomb with it to aid in his conquest of Earth-1. After a series of battles, most of the heroes—including Team Arrow—are held captive at S.T.A.R. Labs after Nazi forces infiltrate it. Oliver, Barry, and his allies are abducted to Earth-X's concentration camp, but Kara is moved to S.T.A.R. Labs. Oliver is determined to kill Dark Arrow after his capture. The villains reveal that Overgirl is dying and Dark Arrow plans to use the Prism, charged by S.T.A.R. Labs' particle accelerator, to produce artificial red sunlight and remove Kara and Overgirl's invulnerability, allowing a heart transplant for Overgirl but killing Kara in the process. Note: This episode continues a crossover event that begins on Supergirl season 3 episode 8, continues on The Flash season 4 episode 8, and concludes on Legends of Tomorrow season 3 episode 8.

9. Irreconcilable Differences

Oliver and Felicity celebrate their wedding with all of their friends. The case against Oliver intensifies when Quentin learns that a member of Team Arrow is testifying against him, causing Oliver to have the team tracked. Quentin is kidnapped by Black Siren and James. Dinah is discovered to be meeting with Vincent and tensions grow on the team until Rene admits he is the one testifying against Oliver. He explains Watson cornered him with evidence that he is Wild Dog and said that, if he did not testify, he would never be able to see his daughter again. Oliver briefly evicts Rene from the team, but the entire team puts aside any differences to rescue Quentin. Black Siren willingly allows Quentin to escape once they are outside. Oliver permanently ousts Rene for abandoning the primary mission to go looking for Lance on his own, violating Oliver's trust again. Rene is later reunited with his daughter, while Dinah and Curtis leave Team Arrow, unable to trust Oliver, John, and Felicity. Through a hidden camera, Oliver, John, and Felicity are shown being monitored by the cabal of James, his second in command Sheck, Black Siren, Anatoly, Vincent, and Diaz.

10. Divided

Oliver continues being the Green Arrow, refusing to have Rene, Dinah, and Curtis help him, while Felicity and Curtis struggle to cure John of his tremors, discovering in the process that their hideout has been bugged, forcing them to relocate to A.R.G.U.S. Oliver once again faces Cayden James, discovering that he has a cabal at his command. Dinah spends time with Vincent before discovering he has allied with Cayden James and attempts to arrest him before being overpowered. After his fight with Cayden James' Cabal, Oliver, Felicity, and John discover that, in order to win, they need to bring the team back together. Oliver apologizes to Rene, Dinah, and Curtis but, despite his apology, they refuse to return to the team. Instead, they decide to start their own team, with Oliver wishing them luck. Curtis gives Felicity a new chip implant for John's tremor problem and then shows Dinah and Rene their new hideout. Felicity puts the new chip in John curing his tremor problem and his nerve damage.

11. We Fall

Cayden James attacks the city's critical internet infrastructure, causing numerous casualties, before demanding a ransom payment of $10 million a day to prevent future attacks. James reveals details of his vendetta against Oliver; a misfired arrow believed to be from the Green Arrow killed his son Owen a year ago. However, Oliver knows that he is not responsible because he was in Hub City at the time. Vincent claims that he is undercover with James' cabal and gives Team Arrow some intel. When one of James' attacks endangers William and his class during a field trip, Oliver is forced to reveal to his son that he resumed being the Green Arrow when he rescues him. Oliver and Quentin set up safe zones for citizens following the attacks; eventually, James' cabal targets them. Oliver and his former team put aside their differences and stop James' party's attack on the safe zones' occupants. Despite William being hurt by Oliver's lies, Felicity helps him see that it was with good intentions and gets him to accept his father's duty. Unable to find proof of his innocence before the deadline, Oliver gives into James' demands to buy time to find it.

12. All for Nothing

Oliver is almost out of money to pay James. Fearing he will detonate the bomb, Vince, who infiltrated James' organization, agrees to download data that could lead the two vigilante teams to where the bomb is located. Despite being successful in transmitting the data to Felicity, he is identified as the traitor, caught, and tortured by Anatoly. The location of the bomb is revealed, but Dinah, Curtis, and Rene decide not to follow Oliver in order to save Vince. However, James anticipates this and uses Vince as bait. Dinah is immobilized under collapsed rubble and is forced to watch Black Siren execute Vince. Lacking the manpower, Green Arrow and Spartan are unable to retrieve the bomb before it is relocated. However, they retrieve the falsified proof that shows Green Arrow killing James' son; the video was edited using the same technology that was used to forge the picture that exposed Oliver as the Green Arrow, implying another adversary is operating behind the scenes. Later that night, Oliver visits Dinah to see how she's doing. Dinah tells Oliver that she will get justice for Vince by murdering Cayden and his team starting with Black Siren. In flashbacks, Vincent and Dinah meet for the first time in Central City Police Department (CCPD), go on their first undercover mission to take out a drug dealer, and undergo their transformations from the particle accelerator explosion.

13. The Devil's Greatest Trick

Cayden James threatens to set the bomb off at midnight. Alena and Felicity are able to decode the video of Oliver killing Cayden's son, proving it was someone else and clearing Oliver. With help from Barry Allen, Oliver is able to keep James from leaving town by showing him the new evidence. James concludes that someone in his group is behind it and asks for his former allies to be brought to him or he will set off the bomb. The team brings Laurel, Diaz, and Anatoly to James, but Laurel says she was behind his son's death and her actions allow everyone but James to escape. Diaz approaches Cayden in custody, revealing that he was responsible for the death of his son and that he has the new police captain on his payroll, killing Cayden before he leaves. Cayden's flashbacks focus on his relationship with Helix, his son Owen, his arrest by A.R.G.U.S., and the news that his son was murdered.

14. Collision Course

Dinah, Curtis, and Rene analyze the latest place Laurel was seen and manage to determine that she was dragged away by somebody. It turns out that Quentin took Laurel to a secure cabin to allow her to heal, which Thea eventually finds out and tells Oliver. Oliver demands the return of the city's money, which Laurel promises, if they get her out of the country. Curtis hacks the chip preventing John's tremors, allowing them to track down Oliver, John, Felicity, and, by extension, Laurel, though Quentin refuses to let Dinah kill her. The two teams fight, with Rene eventually getting injured and Oliver throwing a device that dampens Dinah's scream, allowing Laurel to incapacitate them with her own scream and escape. At the hospital, when John and Felicity come to see Rene, Curtis and Dinah turn them away, saying they want nothing to do with them anymore. At the edge of the city, Laurel begs a van driver to help her.

15. Doppelganger

Laurel appears at City Hall, revealing her story about how she was kidnapped and held against her will. Oliver and Thea find out that Diaz is keeping a hostage, revealed to be former Team Arrow member Roy Harper, prompting Thea to once again assume her vigilante persona to try and rescue him. Dinah, upon hearing of the situation, says she is willing to help out this once, but Oliver refuses, saying that, if she does not trust him, he does not trust her. Oliver and John eventually take on Diaz and his minions, who escape, but they do manage to rescue Roy. Oliver goes to see Laurel, who claims she cannot change who she is, but she will try to be good if Oliver gives her the space to do so, to which Oliver agrees. But, when he leaves, Black Siren receives a message from Diaz and smiles, implying that she is still working with him. Roy and Thea spend an evening together while observed by a woman who reports that the heir of Ra's al Ghul has been located.

16. The Thanatos Guild

Nyssa al Ghul comes to Star City for Thea, claiming that a splinter group from the League of Assassins, The Thanatos Guild, led by a woman called Athena, is coming for her to get the location of a map that Malcolm Merlyn supposedly knew. Thea reluctantly agrees to help Nyssa, but claims she is leaving afterward. Team Arrow eventually finds the box containing the map and uses mathematics to unlock it, only for the map to be blank when opened. Felicity helps to reveal the hidden markers underneath and discovers that it contains locations to other Lazarus Pits. Dinah grows suspicious of her superior on the force, suspecting that she might be peddling Diaz's drugs. Thea talks to Oliver about handing the Green Arrow mantle back to John, but Oliver worries that the current circumstances may be a little too much for John at the moment. Thea, Roy, and Nyssa eventually depart to destroy the Lazarus Pits and Oliver says goodbye.

17. Brothers in Arms

Dinah has Anatoly arrested, but Captain Hill and District Attorney Sam Armand force his release. Oliver confronts them with proof that they are working for Diaz and fires them when they affirm that they cannot accept his protection when faced with the threat posed by Diaz. Oliver apologizes to John about not giving him the suit. John questions Oliver's leadership skills and motives for continuing as the Green Arrow; Oliver counters that he has accepted his past mistakes. The two engage in an argument that leads to a fight. With Diaz pushing Vertigo through the city, Oliver and John work to destroy the shipment, while Curtis reveals his alter-ego to his new boyfriend, Nick Anastas. John decides to leave the team following the fight, leaving Oliver and Felicity as the final two members. Hill fires Dinah and the rest of the clean cops, forcing Nick to realize that vigilantism is the only path forward. Armand claims that Oliver obstructed justice, which is grounds for impeachment. Laurel learns that Diaz has one more vial of Vertigo and kisses him.

18. Fundamentals

With Oliver's impeachment hearing beginning, he loses his temper towards Felicity and William, causing Felicity to request a separation. To his horror, Oliver realizes he has been dosed with Vertigo and he begins hallucinating Adrian Chase and The Hood who torment him with reminders of his past failures. Oliver realizes that he never should have formed a "Team Arrow," allowing his loved ones to make him forget about his original mission. Learning Diaz's location, Oliver dons his original gear and attempts to take on the corrupt officers by himself. Felicity is able to bring Oliver back to his senses, revealing she never requested a separation. Oliver and Felicity escape before Diaz and his men can shoot them. Later, Oliver and William reconcile. Oliver is impeached and Quentin becomes the new Mayor of Star City. Diaz tells Laurel that, since Oliver has been impeached, it is time to inform the crime families across the country that Star City is open for business.

19. The Dragon

A younger Diaz is shown in an orphanage being harassed by a bully. In the present, Diaz starts the next phase of his plan, which is to join a criminal organization called The Quadrant. One of the four leaders of the group does not think that Diaz is worthy, painting him as a street thug, and tries to have his son kill him. With Laurel's help, Diaz wages a small war on the group, killing both the man and his son, then taking his seat at the table. Later on, Diaz tracks down the man who bullied him as a child and sets him on fire as Laurel watches uncomfortably. Meanwhile, Felicity and Curtis work together again on their Helix project while Oliver works alone in Star City. An explosion happens as Oliver is fighting Diaz's men, leaving no survivors. Felicity, fearing for Oliver's life, returns home to find him safe and sound, promising her that he will never leave her.

20. Shifting Allegiances

Oliver pays a debt to Anatoly's rival in Russia, so that Anatoly will be able to go home. Oliver appeals to him, reminding him of his honor and their friendship. Anatoly betrays him, chains him, and later on takes him to see Diaz. Convinced to fight fairly by Anatoly, Diaz and Oliver square off one on one with the loser agreeing to leave the city. Oliver bests Diaz, only to be stabbed by a hidden knife. Later on, Diaz tells Oliver he is having his trial moved up and has him arrested. Meanwhile, Rene returns home, but is still affected by when he was shot. Dinah and Curtis team up with John and A.R.G.U.S. to stop a shipment of weapons by The Quadrant and are successful. As the new mayor, Quentin is approached by Diaz to sign a paper that will grant him some property in the city. Quentin refuses at first, but he eventually changes his mind out of fear for Laurel's safety after she expresses concerns about how dangerous he is.

21. Docket No. 11-19-41-73

Several witnesses are called at Oliver's trial to testify about the identity of the Green Arrow. By threatening his daughter, Diaz coerces Rene into saying Oliver is the Green Arrow at trial. After Oliver takes the stand, the Green Arrow crashes through the skylight, revealing himself to be Tommy Merlyn back from the dead. Tommy testifies that he is really the Green Arrow and is taken into custody. After being saved from Diaz's men by John and Rene, he is revealed to be Christopher Chance, the Human Target. Laurel takes the stand and, despite being threatened by Diaz earlier, testifies that Tommy is the real Green Arrow. Oliver is found guilty, proving the assumption that both the judge and the jury were in Diaz's pocket. Oliver's lawyer moves for a judgment notwithstanding verdict and the judge surprisingly agrees. Oliver returns to the lair and discovers that Chance switched places with the judge during jury deliberation. Oliver and Rene reconcile. An enraged Diaz kills the real judge just before Laurel appears and attacks him and his men, momentarily downing Diaz, before he takes her captive, telling her that he plans to kill Oliver along with his loved ones.

22. The Ties That Bind

Diaz orchestrates attacks against Team Arrow and their loved ones; most escape unscathed, but Curtis's boyfriend Nick is seriously injured. They reunite at the New Team Arrow's bunker, where they watch as Diaz's men destroy Original Team Arrow's bunker. With Anatoly's help, Oliver ambushes Diaz, but he escapes, severely wounding Curtis. The team realizes Diaz was protecting a device containing potentially important data and sends Lyla Michaels into the SCPD headquarters to hack it. Felicity discovers it is an encrypted list of everyone on Diaz's payroll and starts attempting to decode it. Diaz kills one of the Quadrant leaders, assuming she gave Team Arrow the intel about his convoy. He attacks the new bunker, then fights with and nearly kills Oliver, who triggers explosives installed as a fail-safe against intruders. He and Felicity escape, but the still-encrypted data is lost. Diaz meets with the remaining two Quadrant leaders, kills one, and makes the other accept him as the head of the organization. Oliver turns to Watson for help; she agrees, provided he admits to her that he is the Green Arrow.

23. Life Sentence

Team Arrow mounts a final attack on Diaz and, while Diaz manages to escape, Oliver obtains the list of everyone on his payroll, liberating Star City. During the attack, Quentin takes a bullet for Laurel and ends up in the hospital. The team comes to support him, including Laurel and a surprise visit from Sara Lance. However, Quentin suffers a seizure during surgery and dies. Oliver manages to get the team immunity from the FBI and police in exchange for handing himself in. Before arresting Oliver, Watson promises the team that the FBI will stay in Star City to deal with Diaz. Oliver finally admits to the public that he is the Green Arrow and urges his friends and allies to continue fighting to save the city. In prison, criminals act violently towards Oliver now that they know he is the Green Arrow.

Season 7

1. Inmate 4587

Five months after being exposed as Green Arrow and into his life sentence, Oliver Queen tries to maintain a low profile in Slabside Maximum Security Prison in hopes of getting a reduced sentence, an effort which is complicated when Danny "Brick" Brickwell tries to coerce Oliver into helping him and by him being stalked by Ricardo Diaz 's associates. Meanwhile, Felicity Smoak and William Clayton try to cope with witness protection while John Diggle and A.R.G.U.S. continue hunting the fugitive Diaz. Back in Star City, a new vigilante archer appears on the scene, targeting criminals on their list while also helping the city's poor. After being saved from a group of criminals, Rene Ramirez decides to trust the vigilante, despite not knowing who is under the hood. The rest of Team Arrow do not trust the archer and Dinah Drake is determined to make an arrest. Because the archer's tactics, skills, and appearance parallel Oliver's suited persona, the media dubs the vigilante as the new Green Arrow. After being discovered by Diaz, Felicity leaves witness protection to help capture him. In a flashforward, set twenty years in the future, an adult William seeks out Roy Harper on Lian Yu.

2. The Longbow Hunters

The Longbow Hunters arrive in Star City and the team works together with A.R.G.U.S. to try and stop them from stealing a weapon with incredible destructive capabilities. Felicity and Diggle clash over their priorities in dealing with Diaz, leading Felicity to strike a deal with Agent Watson. Meanwhile, Laurel Lance and Dinah are forced to put their feud aside and work together, while Oliver tries to get rid of a prison guard in exchange for info on Diaz from Brick. In flashforwards, William reveals he was led to Lian Yu by GPS coordinates provided by Felicity. He and Roy dig up Oliver's hidden stash and find a clue in his bow which leads them back to Star City.

3. Crossing Lines

Oliver demands Brick honor their deal and Brick says an inmate known as "The Demon" is Diaz's direct connection to Slabside. Brick claims to have arranged a meet with the Demon, but Oliver is instead ambushed. After defeating Brick's hired men, Brick reveals the Demon is incarcerated on Level Two, prompting Oliver to attack a guard to get transferred there. Meanwhile, Felicity plans a trap for Diaz and the Longbow Hunters at the CDC along with Rene and Dinah. The plan fails and Agent Watson is transferred, but it is revealed that Rene and Felicity captured Silencer, one of the Longbow Hunters. Elsewhere, Diggle, Lyla, and Curtis track Diaz's finances to a bank in Zürich. Lyla reveals she is working behind the backs of A.R.G.U.S.' top brass, suspecting a mole.

4. Level Two

In prison, Oliver is tortured both psychologically and by means of drugs and electrical devices, in order to "reprogram" his brain. In Star City, Dinah arrests Rene when she learns that he is providing support to the new Green Arrow but, when the vigilante saves Zoe Ramirez 's life, she has a change of heart. Working together, Dinah, Rene, and the vigilante are able to capture a group of arsonists plaguing Star City. Elsewhere, Felicity enlists the help of Laurel to torture the Silencer for information on Diaz, but to no avail. Felicity allows her to escape in the hope that she will lead them to Diaz, having planted a bug in her belt. In flashforwards, William and Roy are in Star City, but the coordinates change, leading them to what remains of Smoak Technologies. William solves a puzzle and obtains a Rubik's Cube. He and Roy are attacked by the police, but rescued by Dinah, who leads them to safety and an adult Zoe. The two are part of a vigilante resistance group known as the Canary Network. After William solves the second puzzle, Dinah claims that Felicity is dead.

5. The Demon

After having seemingly been broken, Oliver is introduced to Level Two, a secret facility below Slabside, where inmates are kept in inhumane conditions and forcibly become experimental test subjects overseen by Dr. Jarrett Parker. He discovers that Talia al Ghul is the Demon. He reluctantly teams up with Talia to plan an escape, but decides not to escape himself to avoid having to spend the rest of his life as a fugitive. After collecting evidence of what happened in Level Two, he asks Talia to deliver it to Felicity, causing the facility to be shut down and Oliver to get transferred back to Level One. Though Talia gets her revenge on a now-fired Dr. Parker by ambushing him while he was loading his car. Elsewhere, Curtis gets back in the field with Diggle and helps capture an international terrorist following a lead from the Zürich bank. Curtis discovers that A.R.G.U.S. is trying to get rid of the terrorist's possessions and recovers a painting of Dante Alighieri. Laurel plans to use the evidence that Oliver collected to plead for his release.

6. Due Process

Diaz slaughters the Bratva and tortures Anatoly Knyazev in order to get in contact with one of his former KGB associates. Team Arrow rescues Anatoly and discovers that Diaz plans to level Star City with aerial explosives obtained from the associate. Team Arrow foils the plan and finally captures Diaz with help from the new Green Arrow. Meanwhile, in Slabside, Stanley Dover is accused of murdering a guard, but proclaims his innocence. Oliver finds the knife used in the attack, which belonged to Brick's associate Ben Turner. Released from solitary confinement, Stanley thanks Oliver, but inadvertently reveals knowing that the knife belonged to Turner, information he could not have gotten in solitary. At Star City Police Department (SCPD), Laurel orchestrates a deal which will see Oliver walk out of prison in exchange for helping the FBI with their case against Diaz. In flashforwards, Roy reveals that the clue they found on Lian Yu was the "Mark of Four," which Dinah recognizes. William and Roy learn that, before her apparent death, Felicity became a criminal, taking on her father 's mantle as the Calculator. They, along with Dinah and Zoe, find Felicity's plans for the destruction of Star City.

7. The Slabside Redemption

Oliver is told that he is set to be released from prison. Oliver confronts Stanley about his framing Turner for the guard's murder and then visits Turner, promising to help him once he is out of prison. Diaz arrives at Slabside via prisoner transport, but bribes a guard to release him and then visits Oliver, threatening to kill him and his family. After guards refuse to take his warnings about Diaz seriously, Oliver breaks out of his cell and escapes Level One in order to contact Team Arrow. Diaz cuts communications from the prison, preventing Oliver from getting outside help, and releases all prisoners, starting a riot. Turner turns on both Brick and Derek Sampson and helps Oliver get to a final showdown with Diaz, killing Sampson in the process. During their fight, Oliver stabs Diaz in his cell and locks him in it. Elsewhere, Stanley kills Brick and escapes. Oliver is finally set free from prison and reunites with Felicity and John.

8. Unmasked

Now free from prison, Oliver tries to readjust to outside life. When a murder occurs at a party honoring Oliver, the new Green Arrow is suspected and Oliver, Dinah, and Rene set out to prove the vigilante's innocence. Meanwhile, Oliver and Felicity struggle to adjust to the changes Oliver's incarceration inflicted upon their lives and relationship. After she helps Oliver arrest Max Fuller for orchestrating Frank Cassady's murders of Sam Hutchinson and Clayton Ford, Dinah authorizes Oliver to work with the SCPD as a special deputy in order to avoid the anti-vigilante law, much to the annoyance of Mayor Emily Pollard. Diggle and Lyla connect the Dante painting and the Zürich finances to an individual who has a transaction history with multiple terrorist cells, including both the Longbow Hunters and Diaz. Unbeknownst to Team Arrow, they pay Diaz a visit in prison to request his assistance. Meanwhile, the new Green Arrow is revealed as Robert Queen 's daughter. In flashforwards, Dinah, William, and Zoe track down a woman known as Blackstar, who had ties to Felicity's plans. Dinah reveals the meaning of the Mark of Four; it was a signal Oliver made up to bring the team back together if needed.

9. Elseworlds, Part 2

Oliver, Barry Allen, and Kara Danvers head to Gotham City to find John Deegan, but are quickly arrested. However, they are bailed out by Kate Kane, who tells them Deegan can be found at Arkham Asylum. With some assistance from Oliver and Barry's teams, they break in to confront Deegan and retrieve the book he used to rewrite reality, only for the doctor to escape by causing a mass breakout. While trying to contain it, Batwoman shows up to help them before telling them to leave Gotham. Returning to A.R.G.U.S., the heroes attempt to unlock the book when the Flash of Earth-90 breaches through to them and warns them of the Monitor. Oliver, Barry, Kara, and Earth-90's Flash go to confront the Monitor, but the omnipotent being escapes and returns the book to Deegan, who changes reality once more. This time, Oliver and Barry wake up as wanted criminals and are forced to contend with both the police and a black-suited Superman. Note: This episode continues a crossover event that begins on The Flash season 5 episode 9 and concludes on Supergirl season 4 episode 9.

10. My Name is Emiko Queen

Oliver discovers blood belonging to the new Green Arrow and Felicity determines that it belongs to a woman named Emiko Queen, Oliver's father's illegitimate daughter and thus his paternal half-sister. Oliver goes through his father's belongings and discovers that his mother knew about Emiko and her mother Kazumi Adachi. After being injured, Emiko goes to Rene for help and reveals that she seeks to avenge her mother's murder in the Glades. Emiko visits her father's grave, where she is confronted by Oliver. Meanwhile, in order to be able to work without A.R.G.U.S. oversight, Diggle and Lyla restore the Suicide Squad as the Ghost Initiative, recruiting Diaz as its first member and implanting an explosive into his neck to ensure his compliance in tracking down terrorist financier Dante. In the flashforwards, Dinah confronts Rene, who is now the mayor of the Glades (which is thriving thanks to a security program called Archer), and forces him to help her. Later, Rene meets with someone who is linked to the bomb plans, explicitly stating that their plans to build up the Glades will sacrifice the rest of the city.

11. Past Sins

Felicity and Laurel work together to track down a person Laurel believes may have followed her from Earth-2. The person is eventually revealed as the Earth-1 version of the drunk, Brett Collins, who accidentally killed Laurel's father. The Earth-2 version of Brett is revealed to have died five years earlier. Diaz attempts a mass breakout from A.R.G.U.S., killing Curtis in the process, before it is revealed he was in a controlled virtual reality simulation conceived by Curtis to extract information regarding Dante. The SCPD is held hostage by a suicide bomber using electricity who reveals himself to be Sam Hackett, the son of Dave Hackett from the Queen's Gambit whom Robert killed so Oliver could survive. Sam wants Oliver dead, forcing the officers to either kill him or die. Oliver reasons with Sam long enough for Dinah to cut the power, removing his powers and allowing Oliver to apprehend him. Emiko starts to see the good in Oliver and thinks about starting to talk. Dinah reads a note from an unknown source stating that someone will kill the vigilantes one by one.

12. Emerald Archer

Oliver allows a camera crew to follow himself and others associated with Team Arrow around and film a documentary titled The Hood and the Rise of Vigilantes. A new vigilante, named Chimera by Curtis, begins attacking vigilantes in Star City, including Ragman, Huntress, and the new Green Arrow. William returns from witness protection and tells Felicity he was expelled from school, while Oliver debates Mayor Pollard about vigilantism but is interrupted by Chimera. During the attack, Dinah saves Pollard using her Canary Cry, revealing her identity as the Black Canary. When Team Arrow arrives and helps Oliver capture Chimera, Pollard arrests them, prompting Oliver and Dinah to turn themselves in and resulting in Pollard deputizing Team Arrow as part of the SCPD. In flashforwards, it is shown that Blackstar is watching the documentary on Oliver. With intel gained from the documentary, Blackstar and Connor Hawke find the destroyed Team Arrow bunker.

13. Star City Slayer

Members of Team Arrow receive threatening notes and discover a similar note at the murder scene of a councilman who previously worked with Ricardo Diaz. Tracking a drug used to immobilize the victim, they discover the hiding place of the "Star City Slayer," who is revealed as Stanley. He slits Dinah's throat, but Curtis cauterizes the wound, saving her life. Stanley confronts Oliver, Felicity, and William at their apartment, claiming to be the only one who truly understands Oliver. While Felicity distracts Stanley, Oliver subdues him and he is sent back to Slabside. William, wanting a normal life, chooses to live with his grandparents. Curtis accepts a job in Washington, D.C. and leaves Star City, signing sole ownership of their Helix company over to Felicity. Meanwhile, a medical checkup discovers something important about Felicity. In flashforwards, Dinah, Roy, William, and Zoe find the Arrow bunker and get into a fight with Blackstar and Connor Hawke. Blackstar claims that Felicity is alive before revealing that she is Mia Smoak, the daughter of Oliver and Felicity, and William's half-sister.

14. Brothers & Sisters

Felicity and Laurel continue growing closer, with Felicity revealing to her that she is pregnant with Oliver's child. John and Lyla successfully locate Dante with the Ghost Initiative, identifying A.R.G.U.S. Director Bell as the mole. During the operation to catch Dante, Diaz betrays the team to warn him and he escapes, killing Bell and potential client Quraci Princess Noor in the process. Diaz is taken back to Slabside, where an unseen assailant lights him on fire in his cell, killing him. The Ghost Initiative having been exposed, John takes the fall for his wife and hands in his resignation. Oliver and Rene work together with Emiko to find out who killed her mother. In her hideout, Emiko meets Dante, revealing they are working together. In the flashforwards, Mia and William start working together to locate Felicity.

15. Training Day

Team Arrow works with the SCPD to take down an operation that is manufacturing poison bullets. When the initial attempt as part of the SCPD fails, Team Arrow goes rogue and successfully takes down the operation as vigilantes, resulting in Mayor Pollard creating a special vigilante task force that is sanctioned by the SCPD and made up of Team Arrow. Dinah, who can no longer fully perform the Canary Cry following her injury, decides to return to the field as part of the task force. Laurel visits Slabside, where Ben Turner tells her that he witnessed the new Green Arrow kill Diaz. Laurel confronts Emiko, who states that no one would believe Black Siren, a former criminal. In the flashforwards, Mia and William obtain a recorder and play a tape from Felicity, where she gives coordinates to the other members of the team. The two ignore Felicity's orders to leave Star City and instead follow the coordinates to the Glades.

16. Star City 2040

In the flashforwards, Mia and William follow Felicity's coordinates to Galaxy One headquarters. They are almost caught, but are saved by Connor, who reveals himself as an agent of Knightwatch, a "good version of A.R.G.U.S." Meanwhile, Rene confronts Dinah, Roy, and Zoe, revealing that Galaxy One plans to blow up Star City to rebuild it like the Glades, but the city will be evacuated beforehand. The three discover that a terrorist organization named Eden Corps, that uses Galaxy One as a front, paid the SCPD to fake Felicity's death. Mia, William, and Connor enter the headquarters' sublevels, where they find an imprisoned Felicity who claims that the building houses the bombs to be used on Star City. The others reunite with the group before they meet Rene, who has learned that the bombs are already on-site and that there are no plans to evacuate. The group infiltrates a party where Mia destroys an electronic device held by Galaxy One head Keven Dale, disabling the bombs. Dale unveils a helmet that would enable Galaxy One to take the Archer program global. Felicity makes amends with Mia, stating that her grudge with Galaxy One is personal. In the present, Felicity activates Archer.

17. Inheritance

Laurel tells Oliver about Emiko killing Diaz. Oliver finds Emiko and Dante stealing drones and confronts Emiko, who states that she owes Dante and the Ninth Circle for helping her when she was abandoned by her father. Using Archer, Team Arrow locates Dante and, when he seemingly believes Emiko has betrayed him, Oliver saves her and takes her back to the Arrow bunker. However, she escapes after being caught planting a jammer, which takes down Archer and allows the Ninth Circle to steal Sarin gas. Team Arrow tracks the Sarin drones to an airfield, where Oliver disables all but one of them, which gets away thanks to Emiko and releases the gas over an abandoned building. Emiko is revealed as the leader of the Ninth Circle and tells Dante about Archer. She also frames Laurel for killing an SCPD witness while releasing photos of her with Diaz to the press. Meanwhile, Felicity founds Smoak Technologies and hires Alena Whitlock as her CTO. Flashbacks show Emiko being abandoned by her father and meeting Dante. As an adult, she goes to her father for business help, but gets turned down, which leads to her staying silent about the explosives on board the Queen's Gambit.

18. Lost Canary

Laurel goes on the run and partners up with a former associate named Shadow Thief. Felicity discovers that Emiko framed Laurel, but Dinah informs her that Laurel has gone back to committing crime as Black Siren. After failing to convince Laurel to come back, Felicity recruits Sara Lance to come to her and Dinah's aid. The three confront Laurel about what she wants to be, which leads to her turning on Shadow Thief. Dinah clears Laurel's reputation by claiming she went undercover. Laurel decides to return to Earth-2 to right her wrongs as Black Canary. Meanwhile, Oliver and Diggle track the rifle used to kill Emiko's mother and discover it belongs to Kodiak of the Longbow Hunters. Through interrogation, they find out he was hired by Dante. In the flashforwards, Galaxy One unleashes Zeta, a new force hunting down the Canary Network with a tech helmet powered by the Archer program. While the others want to hide, Mia wants to fight back and ambushes one of the Zetas. Mia is overpowered, but is saved by Laurel, who tells her to give the Zeta's helmet to Felicity.

19. Spartan

With the Ninth Circle after a Department of Defense vault drive, Diggle contacts his stepfather, General Roy Stewart, but Stewart refuses to give up classified intel. After they steal Archer from Smoak Tech, Stewart reveals the drive contains an asset list the Ninth Circle can now track. While securing the assets, Diggle and Stewart are captured by Dante. Stewart surrenders codes for a biological weapon called Cygnus X-1 when Dante starts torturing Diggle. The two call in Team Arrow with the Spartan helmet and escape. Team Arrow tracks Archer and the Ninth Circle to Cygnus X-1. While the rest destroy Archer, Oliver confronts Emiko, telling her Dante had her mother killed. Dante exfiltrates Emiko and they escape with Cygnus X-1, after which Emiko kills Dante. Diggle makes amends with Stewart after learning he is blameless in his father's death. Alena copied Archer's root code and suggests a partnership with Magnus Labs to expand it, but Felicity refuses to rebuild it. In the flashforwards, Mia and Connor obtain a power module for the tech helmet from the Deathstroke gang, led by Connor's adoptive brother John "J.J." Diggle Jr., but are afterwards attacked by them. Felicity powers up the helmet and learns Galaxy One has expanded Archer.

20. Confessions

Dinah and Sergeant Bingsley interrogate Team Arrow, who are in SCPD custody accused of killing two subway station security guards. They reveal they recruited Roy Harper to help with an operation where they successfully prevented the Ninth Circle from releasing their biological weapon. After Oliver names Emiko as the killer, the team is released since their stories line up. It is revealed that they all lied and that Dinah was part of the operation, in which Roy killed the guards in a fit of rage. The team decides to protect Roy in order to save the team and be able to continue hunting the Ninth Circle. Oliver recognizes the bloodlust he witnessed and meets a remorseful Roy, who reveals that he died battling the Thanatos Guild and was then revived by Thea Queen and Nyssa al Ghul via a Lazarus Pit. Felicity locates the Ninth Circle's headquarters, where Oliver confronts Emiko, who reveals she has sent the subway station security footage to Bingsley. Emiko comes clean about her role in Robert Queen's death and states that her goal is to destroy Oliver's legacy while he dies a villain like their father. Emiko blows up the building, burying Oliver.

21. Living Proof

Oliver is trapped one floor below his team. The physical and psychological trauma causes him to hallucinate Tommy Merlyn talking to him about how to deal with Emiko. Oliver refuses to listen to Tommy about using the best parts of himself to save her until he envisions a scenario where his vendetta against Emiko leads to the deaths of his teammates. Team Arrow locates Oliver and saves him. Meanwhile, the SCPD raids Smoak Tech, accusing Team Arrow of both the cover-up and the biological weapon, which was traced to Archer. Felicity and Alena escape to the bunker, where they are confronted by Emiko, who leaves after Felicity reveals she is pregnant. Emiko is revealed to have stolen Oliver's arrows and attacks the SCPD as the Green Arrow, stealing the weapon back. Oliver tries to reason with Emiko and refuses to take the opportunity to kill her, allowing her to escape. In the flashforwards, the group sets out to destroy Archer as Felicity contacts Alena, who stole the program and sold it to Galaxy One. William returns to Galaxy One headquarters to steal Archer's root code, but he and Rene are caught. Galaxy One enters the hideout to arrest the others.

22. You Have Saved This City

Emiko spreads the virus throughout the city and holds the detonator in the former Queen Consolidated building. Team Arrow, with Curtis, Laurel, and Ben Turner, evacuates it and disables the relay to the other bombs, while Oliver confronts Emiko, pleading for her to abandon the dark path. Beatrice informs Emiko that her failure to destroy Star City, while publicly exposing the Ninth Circle, has led to the council turning on her. Oliver and Emiko fight the Ninth Circle together, but Emiko is mortally wounded by Beatrice and tells Oliver to hide Felicity and their baby, before he escapes the exploding building. Oliver and Felicity invent the Mark of Four before leaving Star City for Bloomfield. Following Mia's birth, the Monitor appears, demanding Oliver hold up his part of their deal. Oliver leaves with him to assist in the oncoming crisis, despite learning he will die in it. In the flashforwards, Connor and Zoe save the others. Felicity creates a computer virus that Mia and William upload to destroy Archer. The older generation leaves the younger in charge of protecting the city. After a moment with her children at Oliver's grave, Felicity leaves with the Monitor to reunite with Oliver at a place of no return.

Season 8

1. Starling City

Mar Novu / The Monitor sends Oliver Queen to Earth-2 to retrieve Dwarf Star particles, but they are stolen by this Earth's Tommy Merlyn as the Dark Archer who is looking to use them to level the Glades with his own version of the "Undertaking" in order to avenge Earth-2's Thea. Oliver joins forces with Earth-1 John Diggle as well as Earth-2's Laurel Lance and Adrian Chase to stop Tommy and retrieve the particles. Just as Oliver and Diggle are about to leave, an anti-matter wave suddenly consumes all of Earth-2, barely giving them and Laurel time to escape to Earth-1. In the 2040 flashforwards, Connor Hawke, Mia Smoak, William Clayton, and Zoe Ramirez encounter the Deathstroke Gang, led by Connor's adoptive brother John "J.J." Diggle Jr., who have grown more powerful ever since the destruction of the wall between Star City and the Glades and the defeat of Galaxy One.

2. Welcome to Hong Kong

The Monitor brings Oliver's party to Hong Kong to pick up biophysicist Robert Wong, who was forced to recreate the Alpha/Omega Virus. However, Laurel storms off to get her breach device fixed. While Oliver and Diggle learn more about Wong, Triad members attack them, though Tatsu Yamashiro comes to their aid and reveals she knows of the Monitor. Oliver locates Wong, only for China White to kidnap him. After obtaining a sample of the Alpha/Omega Virus, Oliver arranges a trade with China. While Oliver rescues Wong, Tatsu engages China, who stabs her before Laurel blasts her into the harbor. After talking with Tatsu, Oliver plans to get more answers about the Monitor at Nanda Parbat. Elsewhere, Lyla Michaels is revealed to be working with the Monitor as she delivers Wong to him. In the flashforwards, William works on repairing a device obtained from the Deathstroke Gang while Mia, Connor, and Zoe head to a black market where J.J. plans to make a sale. When the Deathstroke Gang arrives, Connor and J.J. enter a parley, though the former's group is forced to let the latter leave when he reveals that he had his men raid the bunker.

3. Leap of Faith

Oliver heads to Nanda Parbat to gain more information on the Monitor from Talia al Ghul, where he reunites with his half-sister Thea and fills her in on his impending death. Oliver, Thea, and Talia plan to retrieve an ancient textbook, but are ambushed by Athena and the League of Assassins. The trio narrowly manage to escape and eventually find the book, learning that the Monitor may actually be causing the oncoming crisis rather than preventing it. Meanwhile, Diggle and Lyla track down Farzad Qadir, who is holding a mother and son captive. As the two free the captives and kill Qadir in the process, Diggle learns that the boy's name is Connor. In the flash-forwards, William managed to escape from the Deathstroke Gang through a trapdoor in the bunker. He discovers their next plan, but it is interrupted by Mia, Connor, and Zoe. J.J. defeats Mia, but when Zoe attacks him, he kills her. Connor beats J.J. down in a rage, but before he can kill him, Connor, William, and Mia are mysteriously teleported to the bunker in the year 2019 where they meet Oliver, Dinah, Rene, and Diggle.

4. Present Tense

Future and present Team Arrow meet without knowing how the former traveled to the present. Mia and Connor choose to keep details of their time a secret from the others, but William anticipates that they will soon become suspicious. Meanwhile, Grant Wilson leads an army as the new Deathstroke to destroy Star City. After Mia and Connor mistake Grant for a time-displaced J.J., they are confronted by present Team Arrow. William and Connor admit what happens in their time including how J.J. becomes Grant's successor and murders Zoe. Diggle and Rene are left devastated yet determined to change their respective children's fates. The two teams work together to stop Grant and he is arrested. After Oliver is told that Grant has been shipped off to Blackgate Penitentiary, Curtis Holt tells Oliver that the Russian Armed Forces have schematics and components to build an anti-matter weapon. Diggle reconciles with Connor. Laurel and Dinah, intrigued by their future selves' actions, make plans to form the Canaries earlier than expected. Rene begins his campaign in the Glades. Oliver begins to be a father to Mia. Later that night, the Monitor makes a deal with Laurel, promising to restore Earth-2 if she betrays Oliver.

5. Prochnost

Oliver learns that their next target is Russian general Alexi Burov, who is working on a pulse wave generator weapon that requires plutonium. Oliver takes William, Mia and Laurel to steal the weapon plans. Laurel discovers that Lyla is working with the Monitor, who she also agrees to work with by stealing the weapon plans before Oliver. Oliver seeks assistance from Anatoly Knyazev to lead him to Burov, who explains he had abandoned the plans, though he has them stored on a hard drive. Burov requests a trade – a cage match for the drive in the Bloodbath, which Oliver accepts. Afterwards, the Bratva led by Oleg intervene and fatally shoot Burov before taking the team captive until Laurel and Anatoly come to free them with William's help. The team then successfully retrieve the drive and celebrate their victory before returning to Star City. Meanwhile, Diggle recruits a reluctant Roy Harper on a heist for plutonium. Following the heist, Roy decides to stay in Star City to help the team against the Monitor. Later that night, Laurel declines Lyla's offer to join her mission as Oliver and Diggle discover Lyla's betrayal, only to get tranquilized.

6. Reset

Upon waking, Oliver finds a living Quentin Lance as mayor at a party. When mercenaries take the SCPD hostage demanding to speak to Quentin, he agrees to their terms while Oliver defeats them, only for the leader to set off a bomb. Oliver awakens in his apartment again learning he's re-living the same day. When he discovers Laurel is also experiencing this, they realize the Monitor set this up. Following the third reset, they conclude attempting to stop the bomb results in Quentin's death which causes the reset. On number four, Lyla tells Oliver he is missing the point and shoots Quentin. On number five, Laurel says goodbye to Quentin. On the sixth reset, Lyla informs Oliver Laurel's gone and that he needs to learn to accept the inevitable for everything to end. After a talk with Quentin, Oliver goes through one more reset and allows Quentin to meet his fate. Afterwards, Lyla states that he has passed the Monitor's test by allowing Quentin to have his final moments and reveals the Monitor brought William, Mia, and Connor to the present. Oliver and Laurel wake up on Lian Yu alongside Diggle, William, Mia, and Connor.

7. Purgatory

The team learns that Lian Yu has been giving off an immense amount of strange energy and Lyla tasks William with creating a device to harness it, while the plutonium to power it is being brought to the island by Dinah, Rene and Roy. Their plane is shot down by a missile and crash-lands on Lian Yu. Diggle, Lyla, and Connor rescue Dinah and Rene, while Oliver and Laurel retrieve the plutonium. However, they are confronted by Edward Fyers, Billy Wintergreen and Yao Fei – deceased figures from Oliver's past who were all revived by the island's supernatural energy. Meanwhile, Diggle's party finds Roy, whose right arm is pinned, forcing Connor to amputate it. After William completes the weapon, Lyla activates it and transforms, absorbing the island's energy and causing its revived inhabitants to disappear before entering a portal. She later returns, now calling herself a "harbinger of things to come", and informs Oliver and Mia that the Crisis has begun as the sky turns red.

8. Crisis on Infinite Earths: Part Four

In a flashback to the planet Maltus 10,000 years ago, Mar Novu experiments with time travel to see the dawn of time, only to accidentally end up in the anti-matter universe and unleash the Anti-Monitor. Following the multiverse's destruction, the Paragons attempt to find a way out of the Vanishing Point and save the multiverse, including Sara Lance, Barry Allen, Kara Danvers, J'onn J'onzz, Kate Kane, Ryan Choi, and Lex Luthor. With Jim Corrigan 's help, Oliver learns how to use the Spectre 's powers so he can rescue the Paragons and strengthen Barry's powers. With his increased speed, Barry drops off the Paragons on Maltus to stop Novu, but gets attacked by the Anti-Monitor and loses the others across the Speed Force. Though the team successfully stops Novu and Barry retrieves everyone, upon reaching the dawn of time, they learn the Anti-Monitor was released, regardless. With Oliver's help, the Paragons engage the god-like being and his shadow demons, holding him off long enough for Oliver to combine the Spectre's powers with the Book of Destiny to reboot the multiverse. Oliver succeeds, but he dies a second and final time, with Barry and Sara at his side. Note: This episode continues a crossover event that begins on Supergirl season 5 episode 9, Batwoman season 1 episode 9, and The Flash season 6 episode 9, and concludes on Legends of Tomorrow ' s special episode.

9. Green Arrow & The Canaries

In 2040, two decades after Oliver's sacrifice saved the multiverse, crime in Star City has been quiet, Mia has led a successful life with her fiancé J.J., and Zoe is alive. When Helena Bertinelli 's daughter Bianca goes missing, Laurel requests Dinah's help in finding her. She then recruits a reluctant Mia, restoring her pre-Crisis memories with Martian technology developed by Cisco Ramon, and manages to convince her to take on the mantle of Green Arrow. Mia, Dinah, and Laurel rescue Bianca from the captivity of her ex-boyfriend Trevor, possessing a Deathstroke mask. Just as Mia learns that he is working for someone else, Trevor sets off the gas line and escapes. Afterwards, Dinah decides to establish the Canary Network. At Oliver's memorial, Mia recognizes the hōzen that William was given as a teenager as a tattoo on Trevor's hand before being tranquilized by masked men who make off with William and leave Mia behind. Concurrently, a mysterious figure ambushes J.J. and uses the same Martian technology to restore his pre-Crisis memories, telling J.J that he "needs him". The episode serves as a backdoor pilot for the spin-off series titled Green Arrow and the Canaries, starring Katherine McNamara, Katie Cassidy, and Juliana Harkavy. The series was not commissioned.

10. Fadeout

In flashbacks to 2012, Oliver and Diggle track and imprison human trafficker John Byrne, a man on Oliver's list. A flashback to 2014 depicts Oliver stopping Slade Wilson from killing his mother. In 2040, a time-traveling Sara invites Mia to Oliver's funeral. In the present following Oliver's sacrifice while averting the Crisis, Byrne abducts the younger William. Felicity Smoak and Rory Regan return to assist in the search. Amidst said search, Roy proposes to Thea, who accepts. Mia rescues William, spares Byrne, and has him arrested. Diggle and Lyla agree to move to Metropolis, Dinah declines a promotion, and Rene continues being a mayoral candidate. Oliver's friends and family host a private funeral for him, with a revived Tommy, Moira, Quentin, and Emiko also attending. Emiko meets Thea and Moira for the first time and is welcomed to the family. Tommy reveals to Laurel he was married to her Earth-Prime counterpart in this timeline. Felicity meets the future Mia. Later, Diggle witnesses a meteor crash and finds a box containing an object emitting a green light. In 2040, the Monitor takes Felicity to be with Oliver in a "paradise dimension" where he has finally found peace.